 ABC's Selena Wang. As for former President Trump, he holds his first rally since last weekend's assassination attempt, appearing with his newly announced running mate, J.D. Vance, later today in Grand Rapids, Michigan. This morning, an apology and an explanation after Friday's cyber meltdown felt worldwide. ABC's Ariel Reshef reports the cybersecurity firm CrowdStrike rolled out a faulty software update. That update had a bug in it that rendered computers useless.