The Fourth of July is expected to be a busy weekend for travel.

There was briefly another participant swooping into Wednesday night’s vice presidential debate. For several minutes, a fly landed in Vice President Mike Pence’s hair, not moving as he answered questions about racial injustice and whether justice has been done in the death of Breonna Taylor. Conversation about the fly briefly dominated corners of Twitter, where debate watchers discussed their distraction and inability to focus on Pence and California Sen. Kamala Harris' answers. Wednesday night’s intruder wasn’t the first to take center stage at an election-year debate. In 2016, a fly briefly landed between Democratic nominee Hillary Clinton’s eyes during a town hall-style debate with now-President Donald Trump.