Right after you have knocked out Mitchell turn around. Go to the last door in the hall. It will be marked UFO Sightings Office. Use your lock pick and unlock it. Go to the computer and get the data stick. It will be encrypted but, you can see the numbers 020781. Go to the keypad, type it in. Inside on the table to the right there is 2 sticky shockers and on the table to the left there is 5 reusable cameras. Take them and get the body. You may now proceed with the new equipment.