A is for Adam, loyal follower of Dr. Sevrin in his quest to locate the planet Eden and quite the fair musician.
B is for Beta Stromgren.
C is for Cestus III.
D is for the Doomsday Machine.
E is for Energy barrier at the edge of the galaxy.
F is for "FIRE EVERYTHING!!!"
G is for Gamelan V.
H is for Halkans.
I is for Indri VIII.
J is for Jump from the Romulan mining laser to catch the Enterprise helmsman.
K is for Koloth, commander of the D7 Klingon battle cruiser Gr'oth around 2268 and a legendary warrior in his Empire who survived until the late 24th century.
L is for Licentious members of the Star Fleet.
M is for the Mars Defense Perimeter, which was easily overwhelmed by the invading Borg cube headed for Earth at the beginning of 2367.