Why did the US Air Force's RQ-170 Sentinel stealth reconnaissance drone have a grill covering its engine inlet instead of using an inlet like the B-2 Spirit? - Quora
The Air Force's Elusive RQ-170 Sentinel Drone Sighted Over California
Did Iran Capture a U.S. Stealth Drone Intact? | WIRED
Iran releases first (somehow suspicious) video of its RQ-170 stealth drone copy in flight - The Aviationist
Metal Earth RQ-170 Sentinel Stealth Drone Plane 3D Model Building Kit Aircraft | eBay