The strike groups had familiar names:
Draper, B - Bobbie Draper, The Expanse
Burton, A - Amos Burton, The Expanse
Ackbar, G - Admiral Giar Ackbar, Star Wars
Idaho, D - Duncan Idaho, Dune
Quaid, D - Douglas Quaid, Total Recall
Rogan, A - Alex Rogan, The Last Starfighter
Bowman, D - David Bowman, 2001: A Space Odyssey
Nesmith, J - Jason Nesmith, Galaxy Quest
Shephard, C - Commander Shephard, Mass Effect
Buck, E - Edward Buck, Halo universe
Garrity, K - Kathleen Garrity, one of showrunner Naren Shankar's karate teachers
Ochiai, H - Hidy Ochiai, one of showrunner Naren Shankar's karate teachers
Ripley, E - Ellen Ripley, Alien
Vasquez, J - Jenette Vasquez, Aliens
Hicks, D - Dwayne Hicks, Aliens
Hudson, W - William Hudson, Aliens
Cooper, J - Joseph 'Coop' Cooper, Interstellar
Deckard, R - Rick Deckard, Blade Runner
Anderton, J - John Anderton, Minority Report
O'Neil, J - Jack O'Neil, Stargate
Levine, R - Rob Levine, one of showrunner Naren Shankar's karate teachers
Rico, J - Johnny Rico, Starship Troopers
Starr, L - Lucky Starr, Asimov or Lone Starr, Spaceballs
Thrace, K - Kara Thrace (Starbuck), Battlestar Galactica
Banks, L - Louise Banks, Arrival
Connor, S - Sarah Connor, The Terminator
Flynn, K - Kevin Flynn, TRON
Stone, R - Ryan Stone, Gravity
Neary, R - Roy Neary, Close Encounters of the Third Kind
Riker, W - William Riker, Star Trek: The Next Generation