5 things to know for May 22: Troop deployments, Republican revolt, SpaceX, Kyle Busch, Air show fallout

CNN By Alexandra Banner, CNN The Memorial Day travel rush is here, and US health officials are on alert for the international spread of dangerous viruses. One major airport is rolling out new Ebola screenings for some incoming passengers, while the CDC has also tightened entry restrictions for travelers arriving from virus-hit regions. Here’s what