Nimrod MRA4 service support, maybe R1 replacement

BAE Systems have been awarded a contract to develop and put into place a support system for the future fleet of Nimrod MRA4 maritime patrol (& various other things aircraft). BAE already support the MR2 and R1 fleets of course. The 3 development MRA4s are being considered for the R1 replacement as an alternative to purchasing ex-USAF RC-135 Rivet Joints.