Tom Cruise has debuted the first trailer for Top Gun: Maverick during a surprise appearance at San Diego Comic Con, the annual pop culture convention.

The 57-year-old actor was introduced to the stage inside the famous Hall H by US comic Conan O'Brien and reminisced about filming the original Top Gun in the city in 1986.

"I was always asked 'When are you going to do another one?' Well, you've been very patient with me. I felt like it was my responsibility to really deliver for you."

The trailer opens with Ed Harris' character, a high-ranking military official, telling Cruise's pilot he is a "dinosaur" in the modern world of aviation.

The clip features action shots of Cruise behind the controls of a fighter jet, as well as him in his famous bomber jacket and aviator sunglasses.

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Last year Cruise told fans on social media that he has begun production on the long-awaited sequel to his iconic 1986 aerial adventure.

The star shared a photo of himself in costume as Top Gun hero Pete 'Maverick' Mitchell with the caption: "#Day1" and the fighter pilot's catchphrase "Feel the need" written across the picture.

Top Gun: Maverick is set to be released in June 2020.

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