At 1:28am early Tuesday morning, a cargo ship collided into the Francis Scott Key Bridge in Baltimore, causing the bridge to collapse. Two people who were part of a construction crew working on the bridge were rescued, but six others are now presumed dead after the Coast Guard announced search and rescue efforts were suspended. Baltimore City Fire Chief James Wallace spoke to Anderson Cooper about the tragedy, and the difficulties his crew face navigating the wreck. Plus, Independent presidential candidate Robert F. Kennedy Jr. announced today that Silicon Valley attorney and entrepreneur Nicole Shanahan is his running mate. CNN's Gary Tuchman spoke to some of RFK Jr.'s supporters to get their thoughts on his VP pick.  Learn more about your ad choices. Visit podcastchoices.com/adchoices