Cognizant service - united kingdom royal air force
NSN 5975-01-176-9007
NSN 6135-01-521-0378
NSN 6105-00-038-7518
NSN 5996-01-239-0385
NSN 5915-01-064-6059
NSN 6150-01-021-5512
NSN 5965-01-346-9014
NSN 6145-01-170-4658
NSN 5905-01-220-8662
NSN 5990-01-290-4787
NSN 5925-01-469-6068
NSN 6240-01-158-5664