The S2 agents should have the pilots secure, if Gluttony is no longer there. And Irina is too valuable an asset to risk, so... her service weapon is still drawn. She's a decent shot, but firing into a brawl...? She'd be just as likely to hurt her ally. She needs a clear shot. So... "Irina, fall!" If Irina obeys- and removes herself as an obstacle- Aoba will fire off a shot into her attacker.