 The Department of Defense did not abolish mission restrictions on the Army's rotary-wing aircraft, thereby technically authorizing the Army to arm helicopters until 1966.The "Howze Board," or "Tactical Mobility Requirements Board," was established in 1962 to develop and test the concept of air mobility.After test exercises, war games, and concentrated study and analysis, the Howze Board recommended that the Army commit itself to organic air mobility – later known as air assault.