I think the surveillance ship was unarmed. But it might be nice for it to have a “big brother” ship standing by — or an on-deck predator drone that could be launched. Need at least two shots: one warning, one kill.
she was unarmed. However she was in company with 3 warships of the Royal Navy. She may have been under the tactical command of a Brit Commodore at the time.
unarmed?. Tempting fate to call it USNS Invincible (T-AGM-24)