6516th Test Squadron AGM-137 Joint Test Force

The Northrop AGM-137 TSSAM (Tri-Service Standoff Attack Missile) was a standoff cruise missile developed for the three branches of the United States Armed Forces, hence "tri-service". Missile development began in 1986 but revelation of cost-overruns in 1991 prompted the Army to pull out of the project. The TSSAM program was eventually cancelled in December 1994.