The United States and its allies are helping Afghanistan emerging from more than 22 years of warfare, although substantial risk to Afghan stability remains. Before the U.S. military campaign against the orthodox Islamist Taliban movement began on October 7, 2001, Afghanistan had been mired in conflict since the Soviet invasion of Afghanistan in 1979. The defeat of the Taliban has enabled the United States and its coalition partners to send forces throughout Afghanistan to search for Taliban and Al Qaeda fighters and leaders that remain at large, including Osama bin Laden. As the war against remaining Al Qaeda and Taliban elements winds down, the United States is shifting its military focus toward stabilizing the interim government, including training a new Afghan national army, and supporting the international security force (ISAF) that is helping the new government provide security.

The majority of US commercial floor space is cooled by rooftop HVAC units (RTU's). RTU popularity derives chiefly from their low initial cost and relative ease of service access without disturbing building occupants. Unfortunately, current RTU's are inherently inefficient due to a combination of characteristics that unnecessarily increase cooling loads and energy use. Existing RTU's in the U.S. consume an estimated 2.4 quads annually. Inefficient RTU's create an estimated 3.5% of U.S. CO{sub 2} emissions, thus contributing significantly to global warming. Also, RTU's often fail to maintain adequate ventilation air and air filtration. This project was developed to evaluate the feasibility of a radically new ''HyPak'' RTU design that significantly and cost-effectively increases RTU performance and delivered air quality. The objective of the HyPak Project was to design, develop and test a hydronic RTU that provides a quantum improvement over conventional RTU performance. Our proposal targeted 60% and 50% reduction in electrical energy use by the HyPak RTU for dry and humid climates, respectively, when compared with a conventional unit.

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The Graphite Isotope Ratio Method (GIRM) is a technique used to estimate the total plutonium production in a graphite-moderated reactor. The cumulative plutonium production in that reactor can be accurately determined by measuring neutron irradiation induced isotopic ratio changes in certain impurity elements within the graphite moderator. The method does not require detailed knowledge of a reactor's operating history, although that knowledge can decrease the uncertainty of the production estimate. The basic premise of the Graphite Isotope Ratio Method is that the fluence in non-fuel core components is directly related to the cumulative plutonium production in the nuclear fuel.

A letter report issued by the General Accounting Office with an abstract that begins "Many in Congress, as well as many transportation experts, believe more money needs to be spent to keep up with the country's surface transportation needs. As Congress considers reauthorization of the nation's surface transportation laws, many observers believe increased private participation and investment in transportation can help meet these needs. GAO was asked to examine cases where state and local governments have used active private sector sponsorship and investment on major highway and transit projects where the private sector was the primary stakeholder in designing, financing, constructing, operating, and maintaining such projects. Among its objectives, GAO (1) identified the extent to which states have used active private sponsorship and investment to finance and build highway and transit projects; (2) identified some advantages, from the perspective of state and local governments, resulting from private sponsorship and investment and some tradeoffs;(3) determined challenges that the private sector faced in these projects; and (4) presented legislative proposals that could help increase private sponsorship and investment in highway and transit projects. We provided a draft of this report to the Department of Transportation (DOT) for its review and comment. DOT …

The F-Canyon Facility was constructed in the early 1950's for the separation and recovery of 239Pu, 237Np and 238U from irradiated natural or depleted uranium targets and fuel rods using the PUREX (Plutonium - Uranium Extraction) process. In the PUREX process, the irradiated target or fuel slugs are received from the reactor areas of the Receiving Basin for Offsite Fuels, charged to the dissolvers and dissolved in nitric acid. The resulting solution contains primarily uranium-238 and smaller amounts of plutonium, uranium-235, and fission products. The primary operations conducted in F-Canyon include the separation and recovery of Pu-239 and U-238 from irradiated materials in the stabilization of plutonium residues. Since 1995, the F-Canyon Complex has been operating to stabilize ''at risk'' nuclear materials and spent fuel from throughout the DOE complex. That mission is complete. Since the last low level waste characterization, the F-Canyon has been implementing the PUREX Operations Suspension Plan and the Deactivation Project Plan.

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A letter report issued by the General Accounting Office with an abstract that begins "The Rural Housing Service's (RHS) Section 521 Rental Assistance Program provides rental subsidies to about 250,000 rural tenants. With an annual budget of over $700 million, the program is RHS's largest line-item appropriation, accounting for approximately 70 percent of the agency's budget. In early 2003, RHS reported hundreds of millions of dollars in unexpended balances, primarily tied to 5- and 20-year contracts issued from 1978 through 1982. Concern has arisen that these unexpended balances may be the result of the agency's budget practices, especially its procedures for estimating funding needs. GAO was asked to assess the accuracy of RHS's budget estimates for the rental assistance program, the activity level of rental assistance contracts issued from 1978 through 1997, and the activity level of rental assistance contracts issued from 1998 through 2002 and the accuracy of RHS's estimates of the rate at which these funds would be used."