While they are fighting in the arena of sport, Duke and Snake-Eyes overhear Cobra Commander plotting to attack Washington DC. This should be impossible since they are hundreds of yards from the Commander's *glass-encased booth* and thus shouldn't be able to hear a word he's saying. On the other hand, perhaps the Commander left the PA system on, which begs the question: Why would he do that?
Towards the end of the miniseries, Duke pulls a homing beacon out of his pocket and activates it so the Joes can traces its signal. First, why didn't Duke turn it on when he was *first* taken to the Cobra HQ? Secondly, as with Snake-Eyes, is security at Cobra HQ so lax that they don't check to see if prisoners are carrying weapons, or homing beacons, on them?