c/n 270 was a T-29B s/n 51-5139 USAF, conv. 24/4/61 to a VT-29B s/n 51-5139 USAF, became N99653 with Westair Intl., later with Delta Air Service, scrapped at Ostend 1981 [WFU]

The last registered owner of N99653 was
DELTA AIR SERVICE INC.
CHEASEAPKE, VA

A bit irritating is this:
N99653 at Malta Luqa Airport, 15.09.1980 with Peacock International…
http://www.airport-data.com/aircraft/photo/000598630.html

Delta Air Service is the fourth registrant (USAF, Westair Intl., Peacock Intl. (maybe!))