Neutron, evaluate inventory. Maybe there's something that can get that door open.

In your bag you have...

LARGE BOMB BEACON: This single-use teleportation beacon summons a very, very large bomb. When set and timed, it will annihilate a large structure or most of a department, severely occupying ChiefEngineer's time. It can be defused by a specially-trained individual.
4x C4 BRICK: These single-use objects breach shielded rooms, completely destroy airlocks and other machinery, or annihilate a body beyond most realistic resuscitation options.
1x TOOLSET: This will allow you to breach any airlock (unless another character is actively interfering). It also allows for disassembly of walls, windows, and certain machines. Hypothetically, you could use these to fix things. The effort takes time.
CAMERA BUG: This will allow you to view the cameras of any area that your team has already visited, and sometimes additional locations. You can track named characters, unless they are wearing tracking-prevention equipment (such as the tracking-prevention spoof-cards your team were issued).
CRYPTOGRAPHIC SEQUENCER: A complex code-breaker that removes safety features on most machinery, causing them to exhibit a totally different, totally chaotic behavior. These behaviors are unpredictable and usually they are the most destructive outcome mechanically possible.
YOUR PREFERRED WEAPON: Better have it. You're familiar enough with this that you don't need to name it or describe it, you know it like the back of your hand.

There are other bits and bobs in here, but that's what's at the top of your dufflebag.

Neutron: Pump an opaque gas through the air vents to block the AI's and turrets' vision.