In Boarding Pass 21, Doug and Drew welcome two of our listeners to the show to discuss several aviation topics including:The likely end for South African AirwaysVoluntary time offMiddle seats blockedNew blood tests might become the "new normal," but have the chance to speed up travel recoveryOps topic: storing a plane, then flying it again for the first timeERJ-170/175 vs. CRJ-700/900Favorite liveriesFavorite past trips and dream trip once the crisis ends