Investigators will look at weather conditions . Two people plan to search through Friday night for the third person , state police say . 100 members of Moats basketball program aboard . Balloon hit a power line , state police spokeswoman says .
Investigators will look at weather conditions . 100 people plan to search through the night for the third person , state police say . Two members of University of Richmond 's basketball program aboard . Balloon hit a power line , state police spokeswoman says .