LYNN ? Two people were hurt, including a homeless person and a firefighter, when a two-alarm fire raged through an abandoned warehouse at 254 Lynnway on Thursday afternoon.The warehouse, behind the U-Haul building at 282 Lynnway, was destroyed along with several U-Haul rental vehicles and trailers, according to Lynn Fire Chief James McDonald.McDonald said when firefighters arrived just after 3 p.m. the building was already fully involved, and there were two people leaving the building whom McDonald believed to be homeless. One, a female, had a broken leg and was taken to Union Hospital.?Our first concern when we saw those two exit the building was that there could be more inside,” McDonald said. However, the fire was too large for firefighters to enter the building to look for more victims, he said.Homeless people are known to congregate and camp in the area.A firefighter sustained “minor injuries” and was also taken to Union Hospital, said McDonald.Four or five U-Haul trucks parked at the U-Haul building in front of the warehouse were gutted as the flames spread, also igniting trees on the property.U-Haul Customer Service Representative Christian Alcantara closed the store after stepping outside and noticing smoke coming from the abandoned building just moments before firefighters arrived on the scene.Police blocked off a large section of the Lynnway, though it didn’t stop bystanders, and even Mayor Judith Flanagan Kennedy, from flocking to the fire with their camera phones, attracted by the billowing smoke blowing across Lynn Harbor.Atlantic Ambulance was at the scene to make sure firefighters were hydrating and staying cool in a misting tent to beat Thursday’s 80-degree temperatures. McDonald kept a careful watch on the 40 firefighters from Lynn, Peabody and Swampscott at the scene.?When you get a fire in this heat, you need to rotate crews more often than normal,” said District Chief Stephen Archer.According to McDonald, the building had been abandoned for some time, and police had problems with squatters on the premises, even boarding it up in an attempt to prevent people from entering. McDonald said the warehouse had long since been determined dangerous, with red “Xs” painted on the sides of the building.?It’s just an unsafe environment,” said McDonald.At around 5 p.m., McDonald said they were letting the building burn.A dollar estimate of the damage to the warehouse and vehicles was not yet available.Eric Adrien may be reached at [email protected].