KC-135Rs assigned to the 507th Air Refueling Wing are slated to be the first Air Force Reserve Command tankers to be retrofitted with the new KC-135 Block 45 upgrade starting in February 2016.
![151222-F-VM627-015[1]](http://alert5.com/wp-content/uploads/2015/12/151222-F-VM627-0151-500x334.jpg)
U.S. Air Force Photo/Maj. Jon Quinlan
Continue reading “KC-135Rs from Tinker AFB to receive Block 45 modifications next year”