yeah... Sean is the oldest by far, and Jo seems to be handling it all quite well (she's already strategizing...). Sean... he's got his own issues, which could make him an interesting leader, but he's also got that sense of "I've got to keep these kids safe..." to balance him out. He seems pretty cool with all of this for an old guy...
Let's let Tarry decide! just kidding, kinda... I don't wanna dump this on Tony all by himself if he doesn't want to... Maybe we'll figure out after our first mission... or maybe Jo AND Sean are leaders, and they get in each other's way...