In January 1960 the Defense Atomic Support Agency wrote to Sandia indicating the weapon met the desired military characteristics with some exceptions. These exceptions remain classified except for the statement that a higher yield was still desired. However in May the Military Liaison Committee amended the military Characteristics requirements to make the weapon compatible with the T248 howitzer in addition to the M1A1. UCRL and Sandia state this was not possible to confirm without further testing. Tests were subsequently performed at Yuma Proving Ground generating angular accelerations of 190,000 radians per second setback accelerations of . No damage to weapon components was detected.