The improved Victor B.2 started to be delivered in 1961, with the first B.2 Squadron, 139 Squadron, forming in February 1962, and a second, 100 Squadron, in May 1962. These were the only two bomber squadrons to form on the B.2, as the last 28 Victors on order were cancelled. The prospect of Skybolt ballistic missiles, with which each V-bomber could strike at two separate targets, meant that fewer bombers would be needed, while the government was unhappy with Sir Frederick Handley Page's resistance to their pressure to merge his company with competitors. While Skybolt's development would be terminated, Victor B.2s were retrofitted as carrier aircraft for the Blue Steel standoff nuclear missile. The introduction of standoff weapons and the switch to low-level flight in order to evade radar detection were said to be decisive factors in the successful penetration of enemy territory.