The United States is internationally at the height of fame for its large defense budget. Reportedly, the country spends over $500 billion for base budget in 2010 and another $130 billion in War on Terrorism. Let's see the most expensive and famous military vehicles in the US.
Northrop Grumman B-2 Spirit
The Northrop Grumman B-2 Spirit, also known as the Stealth Bomber, is the flying wing bomber designed by Jack Northrop of the Northrop Company. The B-2 Spirit is, more clearly, an American heavy bomber which can launch weapons against the most heavily protected enemy lines thanks to ability to evade radar detection. The "B-2 Spirit" was first used in the Kosovo War in 1999 to drop bombs on Serbia, later appeared in the wars in Iraq, Afghanistan and most recently in the 2011 Libyan uprising. The manufacture of B-2 Spirit costs each aircraft averaged over US$2.1 billion including manufacture and procurement costs.

Northrop Grumman B-2 Spirit
USS George H.W. Bush (CVN-77)
Named after former President of the United States, George H. W. Bush, the USS, the longest warships in the world, was produced by US Navy in 2001 and built by Northrop Grumman. The cost of manufacture is $6.2 billion.

USS George H.W. Bush (CVN-77)
McDonnell Douglas F/A-18 Hornet
The McDonnell Douglas F/A-18 Hornet was first introduced in 1978 by McDonnell Douglas. The F/A-18 Hornet’s main duty is reconnaissance and air support. It was in use during Operation Desert Storm and the Blue Angels. The aircraft can reach up to 50,000 feet in a minute and travel at 1,190 miles per hour. In 2006, the cost for each unit was $57 million by US Navy.

McDonnell Douglas F/A-18 Hornet
Bell-Boeing V-22 Osprey
The Bell-Boeing V-22 Osprey is developed as perfect combination of the positive aspects of a turboprop aircraft and a helicopter. The aircraft travels faster than any existing chopper and flies as high as conventional turboprop airplanes. The V-22 Osprey was first used in combat in 2007 in Iraq and later in Afghanistan by late 2011. Each Osprey cost $27 billion in 2000 and rose to $67 million in 2010.

Bell-Boeing V-22 Osprey
Lockheed Martin F-35 Lightning II
The F-35 Lightning II is a part of the Joint Strike Fighter program between the US and the UK. The aircraft serves as ground and reconnaissance missions. The Lightning II is powered with a 4-barreled Gatling cannon, a B61 nuclear bomb and eight types of missiles. The vehicle’s building is up to $122 million.

Lockheed Martin F-35 Lightning II
The Top 10 Best Fighter Aircraft in the World
Related links:
Shortage Of Equipment & Base In U.S. Military
US Military: Most Costly Vehicles