 Several hundred members of the international " <unk> Force " ( SFOR ) were tasked with upholding the Dayton Agreement for the concert . The band were overwhelmed by the sights they saw when arriving . During the war , <unk> Stadium was used as a morgue , and <unk> were present on either sides . Although the venue had escaped the worst of the shelling , the nearby Olympic Hall <unk> had been badly damaged during the war . Despite its condition , U2 used the building for their dressing rooms and offices . Following the concert , it was used to provide lodging for 3 @,@ 000 fans . The band 's hotel , a nearby Holiday Inn , had been shelled during the siege , and part of the building had been destroyed as a result . The walls in Mullen 's room were <unk> with mortar shrapnel , and sections of the floor were also missing . Prior to the show , Sacirbey took Mullen on a tour of the city , showing him the Sarajevo Roses embedded in the streets . 
