"using a new tech"
Remote controlled aircraft date back to the 19th century (yes, seriously), and have been in routine military use since at least WW2. Even this specific model dates back to 1998. It's a regular small plane with long-established design and parts. Whatever clever parts may exist in the electronics (it seems to be utterly standard radar and visible/infra-red optics, but being military they're keeping the full details quiet), the ability to stay in the air should be utterly trivial - this is not some groundbreaking design pushing the limits of new tech, it's about as bog standard and well established as it's possible for an aircraft to get.