Airlines canceled some flights before a new 5G wireless service rolled out, even after Verizon and AT&T agreed to limit the signal around U.S. airports. The FAA says the service could affect airplane safety systems, a claim the wireless industry refutes. Photo: Justin Lane/Shutterstock More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com/ Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #5GRollout #Aviation #WSJ