The Globe and Mail reports in its Friday edition that U.S. President Donald Trump's fixation on national security and America-centric manufacturing is foreshadowing unnecessary disruption for both the U.S. and Canadian aerospace sectors that have long benefited from highly integrated supply chains. The Globe's Rita Trichur writes that north of the border, that pain will be felt most acutely in Quebec. Many executives say Mr. Trump's tariff plan will backfire, and hard, on American companies. Aengus Kelly, chief executive officer of AerCap, the world's largest aircraft leasing company, told Reuters that U.S. tariffs are "counterproductive" because they would scramble supply chains and hamper Boeing's recovery. "Boeing needs cash. It has to convert inventory into cash. Tariffs don't help that," Mr. Kelly told Reuters. "How do you get cash? You deliver airplanes." Amid the current political climate, other industry players are treading more carefully. Aerospace Industries Association, a U.S. aerospace trade organization that represents companies, including Boeing, General Dynamics and RTX, issued a carefully worded statement stressing that "trade and tariffs are interconnected" issues that affect U.S. export growth.