We had one in 77 that was a hanger queen for three month. Got her up and heard they lost the canopy. In came another bird from VA-35 with B/N side missing glass So we thought we’re goo! Then in comes ours with the whole canopy missing Moister got behind the canopy jettison cad and at 35,000’ it froze expanded and set off the cad and fired the jettison