SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making i…::undefined
You are viewing a single thread.
View all comments 27 points
SR-71 was always my favorite growing up. This thing seems pretty badass!
14 points