Detroit Medical Center has relaunched an air transport program that makes it easier for doctors at out-state hospitals to put critically injured or ill patients on a medical helicopter bound for its facility in downtown Detroit. The hospital has had the capability to bring in patients through its helipad for years, but DMC officials say they hadn't actively promoted its use until recently. The officials hope the expansion into the air will help grow its out-state customer base and make the hospital's medical specialties more accessible to patients in smaller communities.