Four members of Harford County's Darlington Volunteer Fire Company were conducting training exercises in the Susquehanna River near the Conowingo Dam on Sunday when their V-hull watercraft hit a rock, causing two men to be thrown into the water.
Two more were thrown onto the deck of the craft.
Harford County Fire Department spokesman Rich Gardiner said other members of the fire company's tactical rescue team conducting operations nearby rescued all four men, who were taken to shore and then to a local hospital.
