You manage to sneak a peak at the Arume forces that begin to surround the base. 3 Killsquads (6 highly trained Arume each), 2 assault craft (airborne vehicles), and a prisoner transport craft.
>>91287007, one kill squad approaches the base while the other two fan out and create a defensive perimeter. The arume squad leader holds up the universal "hold" hand signal. It looks like they know there's something suspicious. You might be able to get a few if you detonate now, since it's clear they know it's a trap.