Elbit to supply J-MUSIC DIRCM self-protection system for 9th MRTT 14 April 2021 (Last Updated April 14th, 2021 10:46) Elbit Systems has been contracted to equip the ninth Nato-owned Airbus A330 Multi-Role Tanker Transport (MRTT) aircraft with J-MUSIC Direct Infrared Countermeasures (DIRCM) system. Share Article Pilots from Multinational Multi-Role Tanker Transport Fleet checking out the Elbit Systems J-MUSIC DIRCM turret. Credit NSPA. Elbit Systems has been contracted to equip the ninth Nato-owned Airbus A330 Multi-Role Tanker Transport (MRTT) aircraft with J-MUSIC Direct Infrared Countermeasures (DIRCM) system. The MRTT is the final aircraft in the fleet, which is operated by the Multinational Multirole Tanker Transport Unit.