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The AWS ( Automatic Warning System ) is a safety system that is mandatory on all mainline registered UK trains. If the proceeding signal is at caution or danger, then the system shall activate a warning sound that the driver has to cancel within about 3 seconds. It is there to prevent or reduce a Signal Passed At Danger ( SPAD ) This photo was taken from the cab of 158797, operated by Northern Rail.
Finalists make their pitches to the judges, Secretary of the Air Force Heather Wilson, Mark Cuban, Chief of Staff of the Air Force David Goldfein, CMSAF Kaleth Wright, and George Steinbrenner IV at the Spark Tank competition at the Air Force Association 2019 Air Warfare Symposium at the Rosen Shingle Creek Hotel on Thursday, February 28, 2019, in Orlando, Florida. (Photo by Mike Tsukamoto, Air Force Magazine)