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Justin and Stephanie Shults live in Brussels and were dropping her mom off at the airport when the attack happened. Family Photo
In a statement issued through the office of Tennessee Sen. Bob Corker, the couple's families later said that "neither Belgium nor U.S. officials have confirmed that Justin and Stephanie Shults have been located."
About a dozen Americans were injured in the bombings, according to the State Department, leading one lawmaker to suggest an American counter at the airport was targeted.
"From my vantage point, it does look like an attack on Americans," California Rep. Devin Nunes, the Republican chairman of the House Intelligence Committee, said Wednesday.