There is no required width as far as I know. Different air forces may have their own standards and regulations covering it.
All fighter aircraft are in some countries Air Force unless they are retired.
The Air Force has Aircraft not Ships. The Navy has Ships.
The Malaysian Air Force currently has 62 fighter and interceptor aircraft and about 40 transport aircraft and 60-65 trainers and light aircraft.
In total, the Royal Canadian Air Force have 77 fighter aircraft in active service, plus 16 fighter training aircraft. The fighter aircraft are all McDonnell Douglas CF-18 Hornets, while the training aircraft are all BAE Systems Hawks.
Chinese J-7, US F-16, and French Mirage 5 fighter planes.
None. Dedicated bombers are exclusively the domain of the Air Force. Fighter/Bombers and attack aircraft can be found in the Air Force, Navy, and Marines. The US Army has no such aircraft.
The safety of it is irrelevant - no air force will let you do that.
The main reason would be quite simply the weight. A commercial aircraft will have a larger laden weight when compared to a fighter jet. Even though a commercial plane will typically have 4 engines vs the typical 1 or 2 of a fighter jet - this is only to provide the extra force required to more such a mass. It will take a longer time to get up to the correct take off speed hence a longer runway. If a car and a Artic. lorry raced along a road to reach 60mph - the car will acheive it first.
In US service it is a fighter aircraft. However, the Israeli Air Force loves it and has developed recce, bomber and multi-role aircraft from it. Their latest, the F-16 "Sufa" is a real winner.
The US army has no fixed wing aircraft. This was part of the 1949 agreement that separated the Air Force from the Army. Air Force gets all fixed wing aircraft, Army gets helicopters.
President Pratibha Patil on Wednesday made history by taking off in a frontline Sukhoi-30 MKI fighter jet aircraft from the air force base here
The Vietnam War escalated from a Viet Cong guerrilla war to a war involving regular Army units of the North Vietnamese Army; including jet aircraft combat between US Air Force/US Navy jet fighter planes against North Vietnamese Air Force fighter aircraft.