At (2) you'll find a keypad which will release toxic gas when you use the code 99871. Grab any equipment you want and a DataCube with the purge valve code 99871. Slip through the vent by the chopper and head down this shaft. Jock tells you the weapon lock can be released on Flight Deck 1. Jock wants to punch a hole in the blast doors, and you need to release the weapon lock holding him back. 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. Hong Kong Deus Ex Walkthrough - Deus Ex 499 You can jump to nearby pages of the game using the links above.