It seems that Call of Duty: Modern Warfare 3 is highly susceptible to something gamers call "spawn trapping", a form of spawn camping in which during the Domination game mode, a team easily captures two zones and then leaves one zone for the enemy to capture, which will force them to constantly spawn near it.
This shrinks the team's spawn area, making it easy to kill them right as they spawn. One team has gotten so prolific at the practice that they were able to achieve a "Mother Of All Bombs" (M.O.A.B.) killstreak in a record 47 seconds. It resulted in one player racking up 144 kills, with the entire other team getting a grand total of 4.
For proof, a video of the session was posted on YouTube, showing the 47 second M.O.A.B. summon and the entire "match", such as it is. It's shocking that Infinity Ward allowed this exploit to occur, especially since Call of Duty: Elite maps "kill/death" spots on the maps.