learn more by calling switch to liberty mutual and you can save up to $423. for a free quote today,call liberty mutual insurance at see car insurance in a whole new light. liberty mutual insurance. a legend in extreme sports dean potter is dead and so is his jumping companion after attempting a jump at yosemite national park. he set records for base jumping in tight rope walks at high altitudes and he had been called a visionary and larger than life by his peers. >> potter and his partner at the time graham hunt were believed to have attempted their jumps together. they were found in separate locations sunday after a helicopter search.