With the furor over long airport security lines growing, Delta Air Lines debuted a new system Wednesday it hopes will help solve the problem.
The long waits at security checkpoints across the nation have frustrated travelers this spring, with airlines warning passengers to arrive at least two hours early. The situation is only expected to get worse this summer.
About 231 million passengers will fly on U.S. airlines from June through August, up 4 percent from the same period last year, according to the trade group Airlines for America.
"The biggest constraint of the system is the X-ray screening of the bags," Delta Air Lines Chief Operating Officer Gil West said on CNBC's "Power Lunch" on Wednesday.
In an effort to speed up the lines, Delta is doing a three-week test run at Atlanta's airport that changes the way passengers move through security.
"It's the first of its kind in the U.S., and day one it increased productivity 30 percent," West said. He's expecting productivity to double before the test run ends.