Lebanese firefighters and army helicopters on Friday put out the remains of a huge fire at Beirut's port that had flared up a day earlier, barely a month after a massive blast devastated the port and the surrounding area.Thursday's fire, which officials said was sparked by welding during repair work after last month's port explosion, covered several districts of Beirut in a huge cloud of black, acrid smoke, causing panic in a city still on edge after the blast.