A group of marker, identificaiton having different characteristics, they may or may not be used together.
NSN 6220-01-295-0626
NSN 5996-00-098-3864
NSN 5998-01-383-8704
NSN 5999-01-463-8277
NSN 6110-01-276-3041
NSN 5985-01-434-5091
NSN 5960-01-003-3933
NSN 5925-01-473-4287
NSN 5925-01-101-6068
NSN 6645-01-303-5855
NSN 6685-01-045-1491
NSN 6610-00-027-1284