Original sentence: The KA-BAR remains a preferred piece of equipment with US Marine Corps at present, and it has become a symbol of the Marines.The knife is inexpensive, easy to replace, and adequate for most tasks
Edited sentence: The KA-BAR remains a favorite, virtually obligatory piece of equipment with US Marine infantry at present, and it has become a symbol of the Marines.The US Marine Reconnaissance units, however, generally prefer the Gerber Mark II.The knife is cheap, easy to replace, and adequate for most tasks.US Marine Corps Boot Camp includes considerable time spent on knife fighting techniques, as well as other edged weapons