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An American teen missionary injured in today's Brussels attack has already had two other close encounters with terrorism.

The parents of 19-year-old Mason Wells tell ABC News he was present at the Boston Marathon during the 2013 bombing and was also in Paris during the bombing and mass shootings last November.

His father Chad Wells said that Mason was basically at "ground zero" of today's twin suicide bombings at Brussels Airport.

He suffered a ruptured Achilles tendon, shrapnel injures, as well as second- and third-degree burns on his face and hands, according to ABC News.

Two other American Mormon missionaries were also injured.

Mason's parents say they spoke to their son and they're optimistic he'll make a full recovery.

"I think the Boston experience helped him to stay calm," Chad said.

"This is the third time that sadly in our society that we have a connection to a bomb blast. We live in a dangerous world and not everyone is kind and loving."

He added: "The way we get back on our feet after something like this happens is a true test of character. He was blessed significantly by God. We see a blessing by this, not a terrible curse."

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