“An important thing for us to remember is that Situational Awareness is of limited value once we have been canalized.
‘Canalize – to restrict operations to a narrow zone by use of existing or reinforcing obstacles.’
“At that point the military term is ‘decisively engaged’ meaning we have lost our ability to maneuver and must fight it out.” – Claude Werner, The Tactical Professor, firearms instructor and former Chief Instructor, at the Rogers Shooting School in Circumstances of a Murder