You'll go into a garage later on, and can find the code in the mechanic shop by looking at the computer. That code is 37-60-80. You'll find a Throwing Knife and Crossbow. These are the only safes in the whole game, and unlocking them will trigger the Gentleman Thief achievement/trophy.

In a 2012 interview, Alavi said he had three goals while working on "No Russian": "Sell why Russia would attack the U.S., make the player have an emotional connection to the bad guy Makarov, and do that in a memorable and engaging way." Alavi drew inspiration from news articles and films, and did not interview victims ...