On the night of January 31, 1975, heavy fighting broke out in Eritrea and incoming rocket-propelled grenades landed inside the Tract E compound. This began a season of frequent nighttime firefights between the Eritrean resistance and the Soviet-backed Ethiopian forces. On 14 July 1975, gunmen abducted two Americans and four Ethiopians from Kagnew Communications Station. The Americans, Steve Campbell and Jim Harrel, worked for Collins International Service Company (CISCO), a government contractor. On Friday 12 September 1975, the Eritrean Liberation Front, ELF, raided the US facility at Asmara, kidnapping a further eight people, including two Americans.