Sooo... Are they in danger now?

For me they are in danger, Fei is sending them to a secluded place, maybe to protect them or keep them away from his business. Since Fei's baishe has always been targeted by enemies i would not be surprised if someone captures the helicopter.

no, it's Asami after all, Sensei may have weakened him in this chapter (I find it a bit strange) but this can change 360º in the next.