The latter has produced a cool ad that was posted on Youtube last week and appeared during last night's Super Bowl broadcast.

The ad shows Northrop Grumman's long tradition of flying wings: the YB-35 prototype dating back to  the 1940s, the B-2 Spirit, the only heavy stealth bomber known to operate with the US Air Force; and the X-47B Unmanned Combat Air System developed for the US Navy.

However, towards the end of the ad another aircraft is teased to the viewers: a flying wing hidden below a protective sheet that is coherent with many renderings which have appeared in the past — and possibly, with the triangle-shaped jet sightings of last year.

A pilot is depicted staring at the plane — a scene that may suggest the LRS-B will be manned.

And the slogan the narrator recites is clear enough: "Building aircraft, the likes of which the world has never seen before: This is what we do."

This is not the only Northrop Grumman ad which gives a hint at the future LRS-B shape: as he explained at War Is Boring, David Axe has seen traces of the LRS-B in another commercial.