Modern jetliners have an environmental control system (ECS) that manages the flow of cabin air. Outside air …
From General Shepperd’s website:
Major General Donald W. Shepperd, USAF (Ret.) is president of The Shepperd Group, Inc. He performs independent consulting on defense, strategic planning, executive leadership, information technology and visioning and preparation of executive teams for the 21st century. He was a fighter pilot who flew 247 combat fighter missions in Vietnam. He retired in 1998 from the Pentagon where he served as head of the Air National Guard. He commanded over 110,000 Air National Guard personnel, 1400 aircraft, 88 flying units, and 250 support units spread throughout the 54 states and territories. General Shepperd was a military analyst for CNN.
He is also a writer and provides military commentary for radio in Arizona, Colorado, and the east coast. He serves on several boards and was an ad hoc member of the Air Force Scientific Advisory Board.
He lives with his wife in Tucson, Arizona. His latest book, Bury Us Upside Down, published by Random House, is available in bookstores and on-line.
As our way to help you celebrate the New Year, we’re offering the first book in the Hamfist series FREE!
You can download the book in the e-book format of your choice at Smashwords.