A internal US Air Force videoclip has been posted on popular video sharing site Metacafé showing a detailed interview and footage on the upgrade programme to the Northrop Grumman B-2 Spirit bomber.
Lt Col Brian Zembraski, the 509th bomber wing's director of staff explains the hitherto closely guarded programme in detail.
Watch the video clip below.
B-2 Stelth Bomber - video powered by Metacafe