Originally Posted by GlobalEntry

No, your wrong brunos, this is the landside shuttle bus. It would have fatal consequences to take that bus.
After deplaning in 2G look for "connections" and for Terminal 2F, don't head for the exit of 2G. You'll take the airside shuttle bus heading directly to 2F and dropping you in the 2F depature lounge (on the lower level), simply look for your gate and walk straight on.
The bus is running at least every 10 minutes, so don't worry