A letter report issued by the General Accounting Office with an abstract that begins "The events of September 11, 2001, triggered a national re-examination of the security of thousands of industrial facilities that use or store hazardous chemicals in quantities that could potentially put large numbers of Americans at risk of serious injury or death in the event of a terrorist-caused chemical release. GAO was asked to examine (1) available information on the threats and risks from terrorism faced by U.S. chemical facilities; (2) federal requirements for security preparedness and safety at facilities; (3) actions taken by federal agencies to assess the vulnerability of the industry; and (4) voluntary actions the chemical industry has taken to address security preparedness, and the challenges it faces in protecting its assets and operations."

A letter report issued by the Government Accountability Office with an abstract that begins "Over the past several years, GAO has issued numerous reports and testimonies on internal control breakdowns in certain individual agencies' purchase card programs. In light of these findings, GAO was asked to analyze purchase card transactions governmentwide to (1) determine whether internal control weaknesses existed in the government purchase card program and (2) if so, identify examples of fraudulent, improper, and abusive activity. GAO used statistical sampling to systematically test internal controls and data mining procedures to identify fraudulent, improper, and abusive activity. GAO's work was not designed to determine the overall extent of fraudulent, improper, or abusive transactions."

A letter report issued by the General Accounting Office with an abstract that begins "The Air Force is developing the F/A-22 aircraft to fly at higher speeds for longer distances, be less detectable, and improve the pilot's awareness of the surrounding situation. The F/A-22 will replace the Air Force's existing fleet of F-15 aircraft. Over the past several years the program has experienced significant cost overruns and schedule delays. Congress mandated that GAO assess the development program and determine whether the Air Force is meeting key performance, schedule, and cost goals. GAO also assessed the implications of the progress of the development program on production."

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) is conducting a multiyear, multibillion-dollar acquisition of a new trade processing system, planned to support the movement of legitimate imports and exports and strengthen border security. By congressional mandate, plans for expenditure of appropriated funds on this system, the Automated Commercial Environment (ACE), must meet certain conditions, including GAO review. This study addresses whether the fiscal year 2005 plan satisfies these conditions, describes the status of DHS's efforts to implement prior GAO recommendations for improving ACE management, and provides observations about the plan and DHS's management of the program."

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) anticipates that the Future Combat System (FCS) will modernize the U.S. Army's ability to move, shoot, and communicate on the battlefield. It is an impressive concept that is the product of holistic, non-traditional thinking. The Army describes FCS as one of the most complex weapon acquisition programs ever executed because it involves developing and integrating a family of 18 systems and an information network. Army leadership started the program early as part of its effort to change Army culture and believes that the program risks are manageable. GAO is required by law to review the program annually. In this report, GAO analyzes FCS's acquisition business case and assesses requirements stability, technology maturity, soundness of the acquisition strategy, and reasonableness and affordability of program costs."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on issues related to the safety of children who may be exposed to pesticides in agricultural settings, focusing on: (1) what federal requirements govern the safe use of pesticides, particularly as they relate to protecting children in agricultural settings; (2) what information is available on the acute and chronic effects of agricultural pesticide exposure, particularly on children; and (3) what the Environmental Protection Agency (EPA) has done to ensure that its Worker Protection Standard considers the needs of children and is being adequately implemented and enforced."

A letter report issued by the Government Accountability Office with an abstract that begins "Under the Freedom of Information Act (FOIA), federal agencies must generally provide access to their information, enabling the public to learn about government operations and decisions. To help ensure proper implementation, the act requires that agencies report annually to the Attorney General on their processing of FOIA requests. For fiscal year 2006, agencies were also to report on their progress in implementing plans to improve FOIA operations, as directed by a December 2005 Executive Order. A major goal of the order was reducing backlogs of overdue FOIA requests (the statute requires an agency to respond to requests within 20 or, in some cases, 30 working days with a determination on whether it will provide records). For this study, GAO was asked, among other things, to determine trends in FOIA processing and agencies' progress in addressing backlogs of overdue FOIA requests since implementing their improvement plans. To do so, GAO analyzed 21 agencies' annual reports and additional statistics."

A letter report issued by the Government Accountability Office with an abstract that begins "By law, GAO annually assesses the Missile Defense Agency's (MDA) progress in developing and fielding a Ballistic Missile Defense System (BMDS). Funded at $8 billion to nearly $10 billion per year, it is the largest research and development program in the Department of Defense (DOD). The program has been managed in 2-year increments, known as blocks. Block 2006, the second BMDS block, was completed in December 2007. GAO assessed MDA's progress in (1) meeting Block 2006 goals for fielding assets, completing work within estimated cost, conducting tests, and demonstrating the performance of the overall system in the field, and (2) making managerial improvements to transparency, accountability, and oversight. In conducting the assessment, GAO reviewed the assets fielded; contractor cost, schedule, and performance; and tests completed during 2007. GAO also reviewed pertinent sections of the U.S. Code, acquisition policy, and the charter of a new missile defense board."

A letter report issued by the Government Accountability Office with an abstract that begins "The nation's long-term fiscal imbalances will likely make DOD's $1.6 trillion planned investment in new weapon systems unsustainable. Thus, it is critical that DOD retains the flexibility to end programs and contracts when necessary and appropriate. Although the federal government generally has the legal right to terminate contracts for convenience, defense stakeholders have sometimes expressed concerns that it will cost more to terminate a contract than to complete it. To address this perception, GAO examined (1) how expected contract termination costs and other factors affect DOD decisions on whether to end programs and contracts; (2) the circumstances under which it would cost more to terminate a contract for convenience than to complete it; and (3) the options DOD has for retaining value or reducing costs, when DOD ends programs or contracts. To do this, GAO examined DOD data on terminated contracts over $100 million; reviewed laws, regulations, and guidance; and met with key DOD officials."

A letter report issued by the Government Accountability Office with an abstract that begins "In 2005, the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) included authorizations of nearly $2.2 billion for safety incentive grant programs to assist states in their efforts to reduce traffic fatalities. Administered by the Department of Transportation's (DOT) National Highway Traffic Safety Administration (NHTSA), five of these programs provide incentive grants to states to implement legislation governing the use of safety belts and child safety seats, and promote activities to reduce alcohol-impaired driving, improve motorcycle training and awareness, and improve traffic safety information systems. To help Congress prepare for the reauthorization of the surface transportation programs in 2009, this report provides information on (1) NHTSA's status in awarding and overseeing states' use of these five grants programs, (2) activities states have conducted using the grants and issues they have faced in applying for and implementing the grants, and (3) how NHTSA plans to evaluate the results of the grant programs and implications for reauthorizing the programs. To conduct this work, GAO interviewed DOT and state officials, analyzed safety reports from 50 states, and analyzed grant data from DOT and 7 selected …

A letter report issued by the Government Accountability Office with an abstract that begins "The Joint Strike Fighter (JSF) program is the Department of Defense's (DOD) largest international cooperative effort to develop and produce a major weapon system. Due to the breadth of international participation, the number of export authorizations needed to share information with partner governments, solicit bids from suppliers, and execute contracts is expected to far exceed past transfers of advanced military technology. In July 2003, GAO reported that managing these transfers and partner expectations while avoiding delays has been a key challenge and recommended that industrial planning tools be developed and used to anticipate time frames for national disclosure and technology transfer decisions. This report examines DOD's response to this recommendation and identifies the practices DOD is using to expedite license processing and avoid program delays."

A letter report issued by the Government Accountability Office with an abstract that begins "The nation's commercial nuclear power plants are potential targets for terrorists seeking to cause the release of radioactive material. The Nuclear Regulatory Commission (NRC), an independent agency headed by five commissioners, is responsible for regulating and overseeing security at the plants. In April 2003, in response to the terrorist attacks of September 11, 2001, NRC revised the design basis threat (DBT), which describes the threat that plants must be prepared to defend against in terms of the number of attackers and their training, weapons, and tactics. NRC has also restructured its program for testing security at the plants through force-on-force inspections, which consist of mock terrorist attacks. GAO was asked to review (1) the process NRC used to revise the DBT for nuclear power plants, (2) the actions nuclear power plants have taken to enhance security in response to the revised DBT, and (3) NRC's progress in strengthening the conduct of force-on-force inspections at the plants."

A letter report issued by the Government Accountability Office with an abstract that begins "According to the International Atomic Energy Agency, between 1993 and 2004, there were 662 confirmed cases of illicit trafficking in nuclear and radiological materials. Three U.S. agencies, the Departments of Energy (DOE), Defense (DOD), and State (State), have programs that provide radiation detection equipment and training to border security personnel in other countries. GAO examined the (1) progress U.S. programs have made in providing radiation detection equipment to foreign governments, including the current and expected costs of these programs; (2) challenges U.S. programs face in this effort; and (3) steps being taken to coordinate U.S. efforts to combat nuclear smuggling in other countries."

A letter report issued by the General Accounting Office with an abstract that begins "The U.S. Census Bureau conducted the Accuracy and Coverage Evaluation (ACE) survey to estimate the number of people missed, counted more than once, or otherwise improperly counted in the 2000 Census. On the basis of uncertainty in the ACE results, the Bureau's acting director decided that the 2000 Census tabulations should not be adjusted in order to redraw the boundaries of congressional districts or to distribute billions of dollars in federal funding. Although ACE was generally implemented as planned, the Bureau found that it overstated census undercounts because of an error introduced during matching operations and other uncertainties. The Bureau concluded that additional review and analysis of these uncertainties would be needed before the data could be used. Matching more than 1.4 million census and ACE records involved the following four phases, each with its own matching procedures and multiple layers of review: computer matching, clerical matching, field follow-up, and clerical matching. The Bureau applied quality assurance procedures to each phase of person matching. Because the quality assurance procedures had failure rates of less than one percent, the Bureau reported that person matching quality assurance was …

A letter report issued by the General Accounting Office with an abstract that begins "Hospital emergency departments are a major part of the nation's health care safety net. Emergency departments report being under increasing pressure, with the number of visits nationwide increasing from an estimated 95 million in 1997 to an estimated 108 million in 2000. GAO was asked to provide information on emergency department crowding, including the extent hospitals located in metropolitan areas are experiencing crowding, the factors contributing to crowding, and the actions hospitals and communities have taken to address crowding. To conduct this work, GAO surveyed over 2,000 hospitals and about 74 percent responded. The survey collected information on crowding, such as data on diversion--that is, the extent to which hospitals asked ambulances that would normally bring patients to their hospitals to go instead to other hospitals that were presumably less crowded."

A letter report issued by the General Accounting Office with an abstract that begins "The federal government is in a period of profound transition and faces an array of challenges and opportunities to enhance performance, ensure accountability, and position the nation for the future. High-performing organizations have found that to successfully transform themselves, they must often fundamentally change their cultures so that they are more results-oriented, customer-focused, and collaborative in nature. To foster such cultures, these organizations recognize that an effective performance management system can be a strategic tool to drive internal change and achieve desired results. Based on previously issued reports on public sector organizations' approaches to reinforce individual accountability for results, GAO identified key practices that federal agencies can consider as they develop modern, effective, and credible performance management systems."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed whether federal agencies have the capacity to monitor and enforce trade agreements, focusing on: (1) the federal structure for monitoring and enforcing trade agreements; (2) the increasing complexity of the federal monitoring and enforcement task and key activities that federal agencies must perform; and (3) whether the Office of the U.S. Trade Representative (USTR), the Department of Commerce, and the Department of Agriculture (USDA) have the capacity to handle their monitoring and enforcement workload, that is, whether their human capital resources and support mechanisms enable them to perform needed monitoring and enforcement activities."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO audited the financial statements of the Capitol Preservation Fund for the fiscal years ended September 30, 1999 and 1998, and the related statements of activities and statements of cash flows for the fiscal years then ended."

A letter report issued by the General Accounting Office with an abstract that begins "Civil penalties are an important element of regulatory enforcement, allowing agencies to punish violators appropriately and to serve as a deterrent to future violations. In 1996, Congress enacted the Inflation Adjustment Act to require agencies to adjust certain penalties for inflation. GAO assessed federal agencies' compliance with the act and whether provisions in the act have prevented agencies from keeping their penalties in pace with inflation."

A letter report issued by the General Accounting Office with an abstract that begins "GAO contracted with Clifton Gunderson LLP to audit the financial statements of the Senate Restaurants Revolving Fund for fiscal years 2002 and 2001. Clifton Gunderson LLP found that (1) the financial statements were presented in conformity with U.S. generally accepted accounting principles; (2) the Fund maintained effective internal control over financial reporting and compliance with laws and regulations; and (3) there was no reportable noncompliance with selected provisions of laws and regulations it tested."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Air Force's engineering and manufacturing development program for the F-22 aircraft, focusing on: (1) the extent to which the F-22 development program is meeting its performance, schedule, and cost goals; (2) whether the Air Force is likely to complete the development program as planned without exceeding the cost limitation established by the act; and (3) whether GAO had access to sufficient information to make informed judgments on matters covered in this report."

A letter report issued by the Government Accountability Office with an abstract that begins "For more than two decades, the Department of Defense (DOD) has invested heavily in space assets to provide the warfighter with mission-critical information. Despite these investments, DOD commanders have reported shortfalls in space capabilities. To provide tactical capabilities to the warfighter sooner, DOD recently began developing TacSats--a series of small satellites intended to be built within a limited time frame and budget--and pursuing options for small, low-cost vehicles for launching small satellites. GAO was asked to (1) examine the outcomes to date of DOD's TacSat and small, low-cost launch vehicle efforts, (2) identify the challenges in pursuing these efforts, and (3) determine whether experiences with these efforts could inform DOD's major space system acquisitions."

Crevice corrosion may be limited by the capacity of the external cathodic region to support anodic dissolution currents within the crevice. The analysis here focuses on behavior of metal surfaces covered by a thin ({approx}microns) layer of the electrolyte film including particulates. The particulates can affect the cathode current capacity (I{sub total}) by increasing the solution resistance (''volume effect'') and by decreasing the electrode area (''surface effect''). In addition, there can be particulate effects on oxygen reduction kinetics and oxygen transport. This work simulates and characterizes the effect of a uniform particulate monolayer on the cathode current capacity for steady state conditions in the presence of a thin electrolyte film. Particulate configurations with varying particle size, shape, arrangement, volume fraction, and electrode area coverage were numerically modeled as a function of the properties of the system. It is observed that the effects of particles can be fully accounted for in terms of two corrections: the volume blockage effect on the electrolyte resistivity can be correlated using Bruggeman's equation, and the electrode coverage effect can be modeled in terms of a simple area correction to the kinetics expression. For the range of parameters analyzed, applying these two correction factors, cathodes covered …

This report summarizes work to develop a novel distributed fiber-optic micro-sensor that is capable of detecting common fossil fuel gases in harsh environments. During the 32-month research and development (R&D) program, GE Global Research successfully synthesized sensing materials using two techniques: sol-gel based fiber surface coating and magnetron sputtering based fiber micro-sensor integration. Palladium nanocrystalline embedded silica matrix material (nc-Pd/Silica), nanocrystalline palladium oxides (nc-PdO{sub x}) and palladium alloy (nc-PdAuN{sub 1}), and nanocrystalline tungsten (nc-WO{sub x}) sensing materials were identified to have high sensitivity and selectivity to hydrogen; while the palladium doped and un-doped nanocrystalline tin oxide (nc-PdSnO{sub 2} and nc-SnO{sub 2}) materials were verified to have high sensitivity and selectivity to carbon monoxide. The fiber micro-sensor comprises an apodized long-period grating in a single-mode fiber, and the fiber grating cladding surface was functionalized by above sensing materials with a typical thickness ranging from a few tens of nanometers to a few hundred nanometers. GE found that the morphologies of such sensing nanomaterials are either nanoparticle film or nanoporous film with a typical size distribution from 5-10 nanometers. nc-PdO{sub x} and alloy sensing materials were found to be highly sensitive to hydrogen gas within the temperature range from ambient to 150 …