-Plasma Reus-
Service guarantees member status
Reflex mode felt like a counter to increased enemy capabilities. When guards can only see 10 feet in front of them shooting radios works, but when they can spot you from crow's nests a baseball's throw away, radioing in would basically be a 100% success rate. Reflex mode was created to deal with the more open levels and terrain, I think.
The only thing I don't like is if a guard yells 'Contact', even without a radio, alert mode triggers. He should have to reach for his radio and use it before the alarm is triggered.