The expression on this Olympic lifeguard's face just about sums up what we're all thinking about her job making sure the world's best swimmers successfully, well, swim: When you realize they're the best swimmers in the world, so you prolly not saving any lives tonight... #Rio2016 pic.twitter.com/vfRuEu0k70 — Manteo Mitchell (@ManteoMitchell) August 8, 2016 Yes, even swimmers who have qualified for the Olympics need lifeguard supervision, per a Rio de Janeiro state law that mandates a lifeguard be present at any pool bigger than 20 by 20 feet, The New York Times reported. All in all, the Rio Olympics has about 75 lifeguards on hand to supervise water sports, including "diving, synchronized swimming, water polo, and white-water kayaking" in addition to swimming events, The Washington Post reported.