"Armourers checking the bomb load of an Avro Lancaster of No. 207 Squadron RAF at Syerston, Nottinghamshire, before a night bombing operation to Bremen, 13 September 1942." Armourers make final checks on the bomb load of an Avro Lancaster B Mark I of No. 207 Squadron RAF at Syerston, Nottinghamshire, before a night bombing operation to Bremen, Germany. The mixed load (Bomber Command executive codeword 'Usual'), consists of a 4,000-lb HC bomb ('cookie') and small bomb containers (SBCs) filled with 30-lb incendiaries, with the addition of four 250-lb target indicators (TI).