The CEO of Boeing Co (NYSE:BA), Dave Calhoun, is reportedly set to meet with U.S. senators this week to address concerns about the 737 MAX 9 grounding. What Happened: Calhoun will meet with Sen. Ted Cruz (R-Texas) and Mark Warner (D-VA) to discuss the recent 737 MAX 9 grounding, reported Reuters. The grounding followed a mid-air blowout of a cabin panel on a new Alaska Air Group Inc (NYSE:ALK) jet. When asked for a comment Boeing’s spokesperson told Benzinga via email that “We have nothing to add and would defer to Delta.” Calhoun will also meet with Sen. Maria Cantwell (D-WA), who chairs the …