US 'Reviewing Steps' to Enhance Security for US-Bound Flights From 'Certain Foreign Airports'

But White House did not say what the "different steps" might be.

— -- The Obama administration is reviewing "a number of different steps" to enhance security for flights bound for the United States from "certain foreign airports," White House Press Secretary Josh Earnest said today.

His comments come one day after the United Kingdom's decision to end U.K. flights to Egypt's Sharm el Sheikh airport for the foreseeable future, following a Russian jet that crashed near the airport this weekend that "may well have been brought down by an explosive device," according to British officials.

"When we develop those additional measures we work closely with [the airline] industry and our international partners to make sure they are properly and effectively implemented," Earnest said.

The cause of Saturday's crash in the Egyptian desert remains undetermined and the black boxes are still being analyzed.