The 20-year-old satellite was no longer being used for forecasts but leaves more than a ton of space junk behind.
The service wants to combine multiple modes of data on the sensor platforms.
Deborah Lee James tells lawmakers that a domestic rocket engine might not be ready by 2019, because "this is rocket science."
The research agency is seeking proposals for advanced unmanned systems and sensors to provide surveillance and environmental data from above the Arctic Circle.
In a sources sought request, the Navy is looking for private companies for a system to help train Special Operations Forces in unmanned intelligence, surveillance and reconnaissance.
The modification covers continued support for integrated control of missile systems, sensors and operators.
The service wants a multifaceted electro-optical system for C-130J transport aircraft.
Six months of testing have concluded on the first three satellites in the AEHF constellation, which could soon reach initial operating capability.