SS13 Colonial Marines: 11 Aliens (5 T3s) died to a single OB 

4 September 2017, Ice Colony
Aliens' push to LZ1 was very successful due to the Crusher squad then suddenly skyfire came down ruined everything. IRCC It was Charlie SL Crimson who thrown down the OB(?), kudos also to the SO who fired it.
Alien won by Ancient Hunte (194?) and Ancient Hunter (941) who together memed many packs of marines and two hit decap, etc, 941 (revealed as Buckleblock) also dueled and won predator.
PS The next round, also as Aliens captured LZ1, OB again killing many, screenshot imgur.com/N6ZDI9s