Tech. Sgt. Dan Brennan, 171st Air Refueling Wing crew chief, appears in a video for the Western Pennsylvania School for the Deaf Nov. 10 about the letters students write to troops deployed worldwide. The video will air on local television stations beginning on Thanksgiving Day through Christmas. WPSD is a non-profit, tuition-free school for deaf and hard-of hearing children from birth through 12th grade. Established in 1869 and located in Edgewood, a suburb east of Pittsburgh, WPSD provides academic and extracurricular programs to over 300 children from 138 school districts and 53 counties statewide.