Vehicles, including fire engines, are parked near a fuel depot which is on fire near Vasylkiv, Kiev region, Ukraine, June 9, 2015. Emergency services struggled to prevent the spread of a deadly fuel depot fire outside Kiev on Tuesday and three firemen were reported missing after the blaze triggered a powerful explosion. The fire burned overnight and by morning had spread to at least 16 tanks, most of them storing petrol. That sent a huge pall of black smoke over the area surrounding the depot near Vasylkiv, 30 km (19 miles) from Kiev. Picture taken with a fish-eye lens. REUTERS/Valentyn Ogirenko