The second round of the U.S. Open swung into action in Mamaroneck Friday with help on hand for medical emergencies.

Around 30,000 fans have flocked to the Winged Foot Golf Club to catch the swing-by-swing action in the tournament. Trained medical professionals are there to make sure spectators are safe. Dr. Steven Zelicof, of the Sound Shore Medical Center, is providing the backbone of medical care. Zelicof is confident his team can handle anything from headaches to heart attacks. Six medical tents are set up and paramedics are on call. Doctors say with the temperature rising, they have responded to several situations on the green, including dehydration.

The second day closed with Steve Stricker at the top of the leader board. He got a birdie on the ninth hole to tie Colin Montgomerie. Stricker then nailed a swing from the bunker to take the lead. Tiger Woods had a tough round and for the first time in his professional career he failed to qualify to proceed in a major tournament.

Related information: First round of U.S. Open flies to a close at Winged Foot Experts say etiquette is key to a good time at Winged Foot Huge crowds, tight security surround Winged Foot in Mamaroneck Buses shuttle golf fans to Winged Foot in Mamaroneck U.S. Open U.S. Golf Association Winged Foot Golf Club