A is for Anyon emitter.
B is for Benjamin Lafayette Sisko.
C is for Cardassian facial hair.
D is for Delta Flyer
E is for the Enterprise. All of them. From the CV-6 and her six predecessors. The CVN-65 and CVN-80. The OV-101. The NX-01. The NCC-1701,1701-A, 1701-B, 1701-C, 1701-D, and the 1701-E.
F is for Federation Fart Factory.