It was called to active duty during the Berlin Crisis of 1961 .
It was an air defense fighter unit until 1960 , when it converted to the Boeing C - 97 Stratofreighter and the airlift mission .
air defense fighter unit was called to active duty during the Berlin Crisis of 1961 .
It was an air defense fighter unit until 1960 , when it converted to the Boeing C - 97 Stratofreighter and the airlift mission .