Summary: Many federal organizations are involved in developing technologies to better detect explosives and narcotics being smuggled aboard commercial aircraft or through U.S. ports of entry. For example, the Federal Aviation Administration is the lead agency responsible for developing explosives detection technologies for civil aviation security, while the Office of National Drug Control Policy is coordinating federal counterdrug technology efforts. The U.S. Customs Service and the Defense Department are also involved in deploying technologies at U.S. ports of entry. However, GAO found that these organization have yet to agree on standards for explosives detection systems, profiling and targeting systems, and deploying canine teams at airports. In addition, they have not agreed on how to resolve issues related to a joint-use strategy and liability. Moreover, key decisionmakers are not receiving periodic reports on efforts by the various government entities to develop and field explosives and narcotics detection technologies.