Boeing engine started in 1943 and Boeing's gas turbines were designated models 502 (T50), 520 (T60), 540, 551 and 553. Boeing built 2,461 engines before production ceased in April 1968. Many applications of the Boeing gas turbine engines were considered to be firsts, including the first turbine-powered helicopter and boat. Vertol Aircraft Corporation was acquired by Boeing in 1960, and was reorganized as Boeing's Vertol division. The twin-rotor CH-47 Chinook, produced by Vertol, took its first flight in 1961. This heavy-lift helicopter remains a work-horse vehicle to the present day. In 1964, Vertol also began production of the CH-46 Sea Knight.
Chinook Health Mennonites live in the Chinook Health region. Numbers vary as groups migrate between home communities in Central America and the region. Chinook Health operates 12 hospitals, 15 community health centres, and 5 continuing care facilities in 14 communities. The health region employs more people in Lethbridge than any other single organization. Employees include 3,500 staff and 200 physicians. Chinook Health provides the following services throughout the region: Chinook Health Chinook Health is part of Alberta Health Services, the governing body for healthcare regulation in the Canadian province of Alberta. Chinook Health administers public health services in southwestern Alberta, Canada; the