Observed across Lake Wequacket (Centerville MA) a bright vertical line dropping from the Western Sky, just after sunset. The line elongated, and then split into 2 sections. Conjecture--it could have been a satellite, burning up on re-entry, or some other object. Light was clearly white and straight. The leading edge was heading toward the ground, perhaps close to Otis AFB? However, clouds obscured the final period of the event.