Christmas tree cultivation species are grown as Christmas trees, although a handful of varieties stand out in popularity. In the United States, Douglas-fir, Scots pine and Fraser fir all sell well. Nordmann fir and Norway spruce sell well in the United Kingdom, the latter being popular throughout Europe. Like all conifers, Christmas trees are vulnerable to a range of pests. The final stage of cultivation, harvesting, is carried out in a number of ways; one of the more popular methods is the pick-your-own tree farm, where customers are allowed to roam the farm, select their tree, and cut it down themselves. Other farmers
Douglas M. Fraser previously served as Commander, Space Warfare Center, Schriever Air Force Base, Colorado; as well as Commander, Alaskan Command, United States Pacific Command; Commander, 11th Air Force, Pacific Air Forces; and Commander, Alaskan North American Defense Region, with headquarters at Elmendorf Air Force Base, Alaska. Prior to his final assignment, he was Deputy Commander, United States Pacific Command, Camp H. M. Smith, Hawaii Douglas M. Fraser Douglas Malcolm Fraser (born April 16, 1953), is a retired United States Air Force general who served as the Commander, United States Southern Command (USSOUTHCOM). He was the first U.S. Air Force officer to become