Security is being tightened for some U.S.-bound flights following the deadly crash of a Russian jetliner in Egypt last weekend.

The Department of Homeland Security announced the move today without naming which foreign airports are involved. The agency said an additional layer of security will include expanded screenings for commercial flights to help keep the traveling public safe.

Upon hearing the announcement, Massachusetts Congressman William Keating praised the increased measures in a statement.

Keating tells WBSM News with the expansion of ISIS, homegrown terrorists in the U.S. and Europe are traveling to Iraq and Syria to be trained by the terrorist group. "The fear is that they're going to be coming back and that our airport network in Europe isn't secure. That they're not keeping track in any of these European countries, even though the U.S. has reached out through the CIA, the FBI. We're there to help but they're not taking the help that we think is required or the steps that are being required," said Keating.

Homeland Security Secretary Jeh Johnson called the enhancements a precautionary move as DHS continues to work closely with domestic and international partners to evaluate the cause of the Russian plane crash.

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