Editor's note: This article introduces Nevada Army National Guard soldiers who are deployed to Afghanistan and have not been profiled in previous articles.Sgt. Jason Coleman, a seven-year member of the Nevada Army National Guard, has seen Afghanistan extensively from the air.As a crew chief on board a Chinook helicopter from Bravo Company, 189th General Support Aviation Battalion, he has flown more than 300 hours since the unit arrived in the country last spring. In addition to his crew chief position, Coleman also serves as the noncommissioned officer in charge of supply (NCOIC) at Forward Operating Base Shank."I'm the supply manager …