Born and raised in Jerusalem, Israel, Cohen enrolled at Tel Aviv University after secondary school in the Engineering program. It was during this time she did a semester abroad at Boston University. After college, she enlisted in the Israeli Defense Forces. Her engineering background made her a great candidate for mechanical maintenance and demolitions.
She was later transferred to FBI SWAT due to an international law enforcement exchange program. Cohen brought her knowledge of demolitions with her in producing a weapon-mounted breach charge capable of blowing open a door or wall from a distance.
Her military training as a demolitions specialist has left Cohen with an inflated sense of self. She can be aggressive, impulsive, and overly confident. She is quick to action, which can be an asset or fatal for someone in her line of work.
A Light Armored Operator, Ash comes equipped with the M120 CREM. It can shoot up to two Breaching Rounds, which will burrow into a surface and detonate automatically.
Breaching Rounds are unaffected by gravity and do not drop off at range.
Breaching Rounds have no projectile size; they can pass through openings that are as small as a bullet hole.
Ash can use her Breaching Rounds to shoot at surfaces that would normally be hard or impossible to reach, like higher windows or even ceilings.
Remote breaches will detonate automatically once they get stuck on a wall, meaning that they cannot be affected by the likes of Mute's Signal Disruptors.
The explosion of the breaching round deals high damage, but has a small radius and cannot one-hit-kill enemies at 100 health. It deals a maximum of 85 damage to 1 Armor Operators.
Getting struck directly by a Breaching Round will result in dealing 50 damage, regardless of armor, though the charge will not explode.
Certain walls can't be completely covered by Reinforcements, where the gap is enough for Ash to shoot through once the uncovered part of the wall is destroyed by her Breach Launcher.
The Breaching Rounds can also destroy Deployable Shields and can injure the Operator behind it. The explosion can also destroy Barbed Wire very quickly.
However, the Breaching Rounds cannot destroy these gadgets if they are affected by Bandit's Shock Wires, as it will be destroyed as soon as it comes in contact with electricity.
Jäger's Active Defense System can intercept the Breaching Rounds if they're within their range.
If Mira has deployed a Black Mirror on an unreinforced wall, she can instantly destroy the Black Mirror (and the wall) by firing a breaching round on the Black Mirror itself.
"Fires an explosive Breach Round that burrows into a surface and automatically detonates." — M120 CREM Description
The M120 CREM was developed as a portable projectile breaching weapon. Similar to other explosive breaching tools used by American and Israeli armed forces, the M120 CREM is capable of breaching through doors without the need to focus on destroying hinges or locks for entry. Unlike other explosive breaching methods, the M120 CREM is comparatively portable with its decreased size and weight, allowing it to be carried as a secondary weapon. The M120 CREM has been successfully utilized by FBI SWAT in penetrating fortified compounds during hostage and search and rescue operations.
Operation Chimera Trailer
"Ricin, Anthrax, Sarin Gas, Ebola, VX Gas, Chimera Viruses. Some enemies are invisible, but the CBRN Threat Unit is Rainbow's shield against those enemies that can kill you with a single drop of blood... Or one wrong breath."
Outbreak: Opening Cinematic
"The National Guard's holding position until the army gets here. No... It's worse– Bartlett doesn't come close, Six. Can't even say if it's terrorism– or something else. I've got no operational jurisdiction. Get them to let go a little. We're not the enemy here. If this isn't terrorism they still need us. Uh, send Thermite, Doc. And I need one of the Russians, I'll explain later. And Six, bring them fast before this all goes down."
Ash's invitational charm (titled "Ash's Service") shows a photo of her with her savta (grandmother), and Ash is wearing typical IDF (Israeli Defense Force) uniform, thus the photo was likely taken when Ash was much younger while serving in the IDF.