"are deployed on" is correct and usable in written English.
You can use it to express that something has been sent to a particular location. Example: Troops are deployed on the western border of the country.
The teams are the same ones that are deployed on Coast Guard cutters, and they had a variety of functions before Sept. 11.
Four of them are fixed which are deployed on the four vertexes of one rectangle in the underground mine in XinAn Coal Mine.
The Cherry Point station is home to one Harrier training squadron and three squadrons that are deployed on missions accompanying Marines from nearby Camp Lejeune.
Militias are deployed on the outskirts of the mountain town of Bani Walid, one of the few remaining strongholds of Qaddafi loyalists.
Many are deployed on the tiella menu.
About 70,000 Pakistani troops are deployed on the mountainous border with Afghanistan.
These aircraft are deployed on its long-range services within Asia-Pacific and to Europe.
Serbs have meanwhile threatened violence against the British troops who are deployed on a bridge dividing the city.
Troops are deployed on the Libyan border to stop suspected terrorist groups bringing in men and equipment.
Of all the French soldiers currently on military operations, half of them are deployed on streets at home.
Brick vaulting, steel arches, tufted navy blue leather, reclaimed oak and touches of gold are deployed on the main floor and mezzanine.
