 Although helicopters were not used in Mozambique to the same extent as they were in Vietnam , the <unk> III was the most widely used , although the Puma was also used with great success . Other aircraft were employed : for air support the <unk> and the <unk> <unk> were used ; for reconnaissance , the <unk> Do 27 . In the transport role , the Portuguese Air Force used mainly the Nord <unk> and the C @-@ 47 . The Portuguese Navy also made extensive use of patrol boats , landing crafts , and <unk> <unk> . 
