The U.S. Marine Corps will phase out the Boeing AV-8B Harrier II jump jet by 2025 — about five years earlier than planned — and will instead extend the life of its fleet of aging Boeing F/A-18 Hornet strike fighters, according to the service’s recently released 2015 aviation plan. In previous years, the service had said it would replace its increasingly older fleet of original model Boeing F/A-18A – D Hornet strike fighters before retiring the Harriers before replacing both fighters with the Lockheed Martin F-35 Lighting II Joint Strike Fighter (JSF). Now, the Harrier will be retired in 2025...