A federal probe has found that drones meant to dazzle holiday season viewers on the shores of Orlando’s Lake Eola didn’t have the most updated flight path programming installed, triggering a chain of mishaps in which some of the aircraft collided with each other, fell from the sky and in one case, darted into a crowd of people and severely injured a child. In its preliminary report investigating the mishap, the National Transportation Safety Board states that the formation of about 500 drones ended up misaligned by about seven degrees, and the drones’ geofence — a virtual firewall meant to contain the devices to a safe zone — moved much closer to the audience than expected. The agency put the blame on Sky Elements LLC, a Texas company that was under contract with the city for two shows on Dec.