Transportation safety

Several bullet holes can be seen in the driver's side window of a Metro Bus on Northeast 125th Street, between 32nd and 33rd Avenues Northeast after a shooting in Seattle, Wednesday March 27, 2019. (Dean Rutz/The Seattle Times via AP)

FILE - This Thursday, March 14, 2019, file photo shows a Boeing 737 Max 8 airplane parked at Boeing Field in Seattle. America's standing as the model for aviation-safety regulation will be on trial as congressional hearings begin Wednesday, March 27, 2019, into the Federal Aviation Administration's oversight of Boeing before and after two deadly crashes of its best-selling airliner. (AP Photo/Ted S. Warren, File)

FILE - In this Monday, March 18, 2019, file photo, the logo for Southwest Airlines appears above a trading post on the floor of the New York Stock Exchange. The Federal Aviation Administration says a Southwest Airlines Boeing 737 Max jet made a safe emergency landing Tuesday, March 26, 2019, in Orlando, Fla., after experiencing an apparent engine problem. (AP Photo/Richard Drew, File)

The cruise ship Viking Sky as it drifts after sending a Mayday signal because of engine failure in windy conditions near Hustadvika, off the west coast of Norway, Saturday March 23, 2019. The Viking Sky is forced to evacuate its estimated 1,300 passengers. (Odd Roar Lange / NTB scanpix via AP)

FILE- In this March 21, 2018, file photo a Thai Lion Air employee displays a ceremonial key to the company's newest plane, Boeing's first 737 MAX 9 jet, following a delivery ceremony to the airline in Seattle. The United States and many other countries have grounded the Max 8s and larger Max 9s as Boeing faces the challenge of proving the jets are safe to fly amid suspicions that faulty sensors and software contributed to the two crashes in less than five months. (AP Photo/Elaine Thompson, File)

FILE - In this Monday, Jan. 14, 2019, file photo, Indonesian Navy Commander Rear Admiral Yudo Margin shows the recovered cockpit voice recorder of Lion Air flight 610 that crashed into the sea in October during a press conference on board of the navy ship KRI Spica in the waters off Tanjung Karawang, Indonesia. Indonesia's transport safety board chair said during a press conference, Thursday, March 21, 2019, that a third pilot was in the cockpit of penultimate Lion Air flight before the crash. (AP Photo/Achmad Ibrahim, File)

Firefighters stand by the gutted remains of a bus in San Donato Milanese, near Milan, Italy, March 21, 2019. Italian authorities say a bus driver transporting schoolchildren stopped his vehicle on a provincial highway, told the passengers to get off and then doused the interior with gasoline and set it on fire. Italian media reported that the driver, an Italian of Senegalese origin, was immediately apprehended. (Daniele Bennati/ANSA via AP)

In this Monday, March 11, 2019 file photo, a Boeing 737 MAX 8 airplane being built for TUI Group sits parked in the background at right at Boeing Co.'s Renton Assembly Plant in Renton, Wash. The Transportation Department confirmed that its watchdog agency will examine how the FAA certified the Boeing 737 Max 8 aircraft, the now-grounded plane involved in two fatal accidents within five months. The FAA had stood by the safety of the plane up until last Wednesday, March 13, 2019 despite other countries grounding it. (AP Photo/Ted S. Warren, File)

FILE - In this May 10, 2017 file photo, Ben Lieberman poses for a photo at his home in Chappaqua, N.Y. Lieberman, whose 19-year-old son died in a crash involving distracted driving, is urging support for a legislative proposal that would make Nevada the first state in the U.S. to allow police to use prototype technology to find out if a person was using a cellphone during a car crash. (AP Photo/Julie Jacobson, File)

FILE - This Friday, June 19, 2015 file photo shows the Department of Transportation Federal Aviation Administration building, in Washington. For more than six decades, the Federal Aviation Administration has relied on employees of airplane manufacturers to do government-required safety inspections as planes are being designed or assembled. But critics say the system, dubbed the "Designee Program," is too cozy as company employees do work for an agency charged with keeping the skies safe while being paid by an industry that the FAA is regulating. (AP Photo/Andrew Harnik, File)