Kitnut,
The Squadron with the multi-coloured tails is VF-194 - which is a fighter Squadron (Fighter Squadron 194). A Viking Squadron would be VS something, so I doubt it. Perhaps just adopted similar markings.
Quite often some squadrons had "rainbow"markings on their tail - particularly the rudder - of their "CAG BIRD"(often their 00 aircraft, 100, 200, 300 etc).
I assume most are aware of the Air Wing numbering system?