sentences:  The existing F-16's will also be upgraded to the block 72 Viper standard.In July 2011, a RMAF C-130H crash killed 78 people after the aircraft, en route from Dakhla, a city in Morocco to Kenitra Air Base in Kenitra, crashed from a planned stop-over at Guelmim Air Base.The 6 crew, 60 members of the army and 12 civilians, mainly partners travelling with their partners, perished in the accident.