Sentry Force had two squadrons on 7 aircraft
Mostly due to the sheer number of people required to operate 7 aircraft, and perhaps a need to find postings for Wingcos... After
PR '09 the cuts meant only one operational Sqn was required.
Might be a case for 2 x P-8 Sqns, but I wouldn't expect a second to appear until all nine a/c are delivered, and only then when approaching a state of being 'fully manned'. 9 x a/c, ~9 crew, 2(?) crew per frame: circa 160 people + 'hangers on'*, call it 200 all-in.
*that isn't
meant to sound derogatory!