Those magnificent men, in their flying machines...some of them air cadets, others who are long-toothed veterans of war in the air.
Quite simply, the most sophisticated and pound for pound most dangerous vehicle in the skies of the Cosmic Era
Another real world thing. White tea. Can only be picked two days a year, the two days before the flowers blossom. Could be a similiar plant that...is the deadliest poison known, cure known diseases or psychosis, or a potent herb that just tastes awesome.