7 B-2As at Block-30 level in 1999 (thus could be part of OAF):
AV-2 82-1067 Spirit of Arizona
AV-3 82-1068 Spirit of New York
AV-5 82-1070 Spirit of Ohio
AV-6 82-1071 Spirit of Mississippi
AV-8 88-0329 Spirit of Missouri
AV-20 93-1087 Spirit of Pennsylvania
AV-21 93-1088 Spirit of Louisiana