Aside from Spock's bangs and the Vulcan salute, Star Trek’s Starfleet insignia, often referred to as the "delta," is one of ...

Winner: Main Space Delta 11 emblem. Few graphical symbols go harder than crosshairs, just ask Public Enemy. Runners-up: (left to right) 25th Space Range Squadron, 11th Delta Operations Squadron ...

However, only district-issued Safe Space stickers will be allowed, which do not include the name, logo or insignia of an outside group. All others must be removed, according to the Friday message.