41. He studied in the Massachusetts Institute of Technology where he learned Unit operations from their creator, William H . Walker. 42. The high-firepower AC-130s typically give close air cover to forces already on the ground or going in for small-unit operations . 43. The traversers were removed from service in 1967, when all services to the station switched to diesel multiple unit operation . 44. Despite electrical differences between the batches, all VBZ Tram 2000 units can be combined in pairs for multiple unit operation . 45. The field applies various principles in process engineering and unit operations to the manufacture of paper, chemicals, energy and related materials. 46. Barak, who is 54, was the most decorated soldier in Israel's history, with a glamorous reputation for exploits in elite-unit operations . 47. CFB Wainwright offered both officer and basic training courses, battalion-level unit operations and acted as a host for training foreign detachments. 48. The locomotives are equipped for Driving van trailer for instance ) and for multiple-unit operation ( see Multiple-unit train control .) 49. They work as part of a Unit Operations team with the Yeoman of Signals ( YofS ), who are communications technical specialists. 50. The choice and order of unit operations employed in post-treatment is dependent on water quality regulations and the design of the NF system.