The G-project suits are being stored in two different hangers in the base just to make sure they don't have all their suits in one place in case of them being compromised. The astrays are at a hanger near the airport which they will steal the astrays not including Blue. As for the rest you seem to have it done so to speak. 

If you are wondering how Tyber is near scientists it's because he and his men attacked ORB and OMNI scientists who went to check out how the others are coming along by chance. They went there to disrupt communications before jacking the astray units.