High quality reprint of this recently declassified 1968 study."The War in Vietnam" provides an overall look at the Southeast Asia situation, as it relates to the role of the United States Air Force. Intensifying its air operations, the USAF increased its close air support, interdiction, fixed-wing, and helicopter support. New tactics were also used to improve the Search and Rescue capability in highly defended areas and measures were devised to minimize limitations of aircraft in recovering downed airmen. In an effort to exhaust enemy resources and remove his sanctuaries in North Vietnam, one of the major objectives of the air campaign was greater targeting freedom. A probing for target alternatives showed destruction of hard-to-replace vehicles could be more effective than "cratering a road, interdicting a rail line, or destroying a bridge." Since enemy strategy emphasized prolonging the war by keeping the U.S. out of the: Hanoi/Haiphong region, CINCPAC enumerated methods of attacking his air defense system, including MIG air bases and aircraft on the ground.