Updated on: March 17, 2026 / 9:11 PM EDT / CBS/AP Add CBS News on Google Air travelers faced hundreds of flight cancellations and thousands of delays on Tuesday in the wake of  powerful storms that struck the Midwest and Eastern Seaboard. Many airports also continue to struggle with disruption from reduced staffing at often-jammed security checkpoints amid a partial government shutdown that has lasted more than a month.   The partial shutdown that started Feb. 14 has held up paychecks for employees of the Transportation Security Administration as Congress deadlocked over immigration issues. More than 300 TSA staffers have quit since the shutdown began, and call-out rates have more than doubled, according to data obtained exclusively by CBS News.  Monday has had the highest call-out rates so far, TSA data show, followed closely by the number of absences on Sunday and Saturday.…