Narrative:

We had just leveled from a descent to FL240 on a flight from atl-xna. A few mins later, we received a TA, followed immediately with an RA 'climb now.' simultaneously, we acquired visual on a B52, passing right to left, 200 ft below and less than 2 1/2 mi, taking extreme evasive maneuvers around us. No prior contact from center was given.

Google
 

Original NASA ASRS Text

Title: ACR TURBOJET TAKES EVASIVE TCASII ACTION AND OBSERVES EVASIVE MANEUVER OF B52 AT SAME ALT.

Narrative: WE HAD JUST LEVELED FROM A DSCNT TO FL240 ON A FLT FROM ATL-XNA. A FEW MINS LATER, WE RECEIVED A TA, FOLLOWED IMMEDIATELY WITH AN RA 'CLB NOW.' SIMULTANEOUSLY, WE ACQUIRED VISUAL ON A B52, PASSING R TO L, 200 FT BELOW AND LESS THAN 2 1/2 MI, TAKING EXTREME EVASIVE MANEUVERS AROUND US. NO PRIOR CONTACT FROM CTR WAS GIVEN.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.