 The only other United States Air Force combat unit to use the Silverplate B @-@ 29 was the 97th Bombardment Wing at Biggs Air Force Base in El Paso , Texas . In mid @-@ 1949 it received 27 of the aircraft from the 509th Bombardment Wing when the latter transitioned to B @-@ 50D bombers . The re @-@ equipment of the 97th Bombardment Wing was part of an expansion of the atomic strike force to ten wings during 1949 . Within a year all were converted to TB @-@ 29 trainers . One other Silverplate B @-@ 29 , on temporary assignment in the United Kingdom , was converted into a weather reconnaissance aircraft ( WB @-@ 29 ) and transferred to the 9th Bombardment Wing at Travis Air Force Base in California . The last Silverplate B @-@ 29 in service as a nuclear weapons carrier was reassigned to another role in November 1951 , ending Silverplate after nearly eight years . 
