Sam Fisher- Burn Cord

  Suddenly, the mesh screen was there, a massive gridlike wall emerging out of the darkness. Fisher kicked his legs out just in time for his fins to take the brunt of the impact. Still, the draw of the current was strong enough to plaster him face-first against the mesh. Through it, cast in the red glow of his light, the propeller was slowly winding down, each blade a massive scmimitar-shaped shadow.
...

  From his waist pouch Fisher withdrew an eight-foot long cord. Nearly identical to the burn-ties he'd used during his penetration of the Newport News shipyard, this cord was coated with a water-resistant adhesive.

  He mashed the cord against the mesh in a rough circle, then jammed his thumb into the chemical detonator and backed away. Two seconds passed. The oval-shaped flash of white light lasted eight seconds. When the bubbles cleared, Fisher finned ahead, hand outstretched, and grabbed the severed section of mesh. He gave it a quick jerk and it came free. He tossed it away.

- Checkmate, Chapter 17