The Air Force Research Laboratory (AFRL) Multispectral Sensing and Detection Division (RYM) in the Sensors Directorate conducts basic and applied research, advanced technology development, as well as test and evaluation to meet U.S. Air Force (USAF) aerospace electro-optical (EO) and radio frequency (RF) sensor needs for air, space and C2 sensor systems. AFRL/RYM conducts programs in modeling, simulation, research, design, test and evaluation of RF and EO subsystems and sensors for use in offensive, defensive and integrated offensive/defensive systems. AFRL/RYM ensures unequaled persistent intelligence, surveillance and reconnaissance; time sensitive targeting; and battlespace access capabilities for America’s air and space forces by developing, demonstrating and transitioning advanced RF and EO sensors. AFRL/RYM is soliciting innovative research proposals in the following Thirteen (13) research areas. Amendment 2 - Updates the Technical and Contracting Points of Contact Amendment 3 - Updates the Technical and Contracting Points of Contact Attachment 4 - Updates Contract Information and URLs and Contracting Points of Contact