Mr. Castanos smiling for the camera in 3D Heights Something really cool is happening in Washington Heights—like, a thousand times cooler than that random MTV reality show from last year. Military veteran Jerry Castanos—who spent eight years in Afghanistan and eleven years, total, overseas—recently opened a 3D printing store in the Washington Heights neighborhood of Upper Manhattan, where he grew up. The store, aptly named 3D Heights, is located on Broadway between 172nd and 173rd Streets, and is run by military veterans and local community members.