AFP-675
AFP-675 (Air Force Program-675) was a Space Shuttle experiment package that was carried into orbit on Discovery as part of STS-39.
AFP-675 consisted of six experiment packages mounted on a pallet in the Discovery's cargo bay. The total weight of the package was 5,080 kilograms (11,200 lb). The objectives of the project were:
- To obtain data in several wavelength regions to support the development of Department of Defense (DOD) systems
 - To validate technologies for DOD applications
 - To validate the use of man as an autonomous experimenter in space
 - To demonstrate the cost effectiveness of performing DOD experiments on reusable systems.