The U.S. Air Force Research Laboratory (AFRL) Munitions Directorate and Lockheed Martin signed a five-year cooperative research and development agreement to thoroughly assess tri-mode weapon capabilities, emerging targeting concepts, and guidance techniques. Data and analysis from this effort will enable AFRL to develop a baseline for integrating seekers onto future USAF weapon platforms intended to engage stationary and mobile targets in day, night, and adverse weather conditions. Lockheed Martin's cooled tri-mode seeker is based on three combat-proven weapon systems: Javelin, LONGBOW, and HELLFIRE. The first-generation tri-mode seeker was developed in 2001 for the Common Missile program; later generations were developed for the Small Diameter Bomb II and other weapon systems. The seeker, now in its fourth generation, has undergone thousands of hours of laboratory, tower, and captive-carry tests and has been proven in dirty battlefield testing and in guided flight. The tri-mode seeker combines a semi-active laser sensor, an imaging infrared (I2R) sensor, and a millimeter wave radar into a single seeker with a common aperture.