WASHINGTON, United States (AFP) — A hot air balloon that went down in a fiery crash in a Texas pasture, killing all 16 people on board, likely struck a power line, an investigator said Sunday. NTSB official Robert Sumwalt said it was not clear if fire broke out before or after the balloon apparently touched electrical wires, NBC reported. A power line runs prominently across the field. The US National Transportation Safety Board, taking the […]