The DoD has hired a retired SEAL to test physical security arrangements; his methods are extreme. He captures a submarine and takes her to sea. Bud serves as the official observer; Harm lends a hand. Gunny meets resistance and resentment.

A newspaper prints an op-ed piece, contemptuous of the PotUS (and a violation of the UCMJ), which first appears to have come from Harm's office computer; Harm figures it out. Meanwhile Mac encounters an unusual question about childbearing.