The U.S. Defense Department and Lockheed Martin Corp have reportedly reached an agreement on a fifth batch of 32 additional F-35 fighter planes. 

Reuters reported Friday that the deal is worth around $3.8 billion, but said both sides are still finalizing the details. 

Pentagon spokesman George Little told Reuters that details on the cost per aircraft would be disclosed once the final contract is finalized. 

The F-35B stands out among military aircraft because it can be launched from small Navy ships and land in confined areas, allowing it to support ground troops on smaller battlefields. Its sophisticated stealth capabilities also means, like the Air Force's F-22, the aircraft can fly into enemy territory without being detected by radar. 

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