Deus Ex -
You're in Hong Kong, but the MJ12 locked onto Jock's Chopper and had the nav computer fly you right into their base atop the Versalife building. Jock wants to punch a hole in the blast doors, and you need to release the weapon lock holding him back. Jock tells you the weapon lock can be released on Flight Deck 1. Slip through the vent by the chopper and head down this shaft. At (1) you'll find the Munitions Bay. Grab any equipment you want and a DataCube with the purge valve code 99871. At (2) you'll find a keypad which will release toxic gas when you use the code 99871. You can don a Hazmat suit or wait out the gas in the center of the shaft. At (3) is a vent which leads to the MJ12 barracks.