Complex sentence: The President's entourage braved gale force winds to fly for 40 minutes from the Phoenix Park in Dublin in two Chinook and two Black Hawk helicopters which landed in St. Flannan's Park in wet and blustery conditions.
Split into simpler sentences: The President's entourage braved gale force winds to fly from the Phoenix Park in Dublin in two Chinook and two Black Hawk helicopters. The party landed in St. Flannan's Park in wet and blustery conditions.