CREATE TABLE table_73074 ("Date" CLOB, "B-52 Model" CLOB, "Serial #" CLOB, "Unit" CLOB, "Bomb Capacity" CLOB, "Mission/Target" CLOB, "Cause of Loss" CLOB)

When 441st bs, 7th bw is the unit what is the b-52 model?
SELECT "B-52 Model" FROM table_73074 WHERE "Unit" = '441st BS, 7th BW'
SELECT "B-52 Model" FROM "table_73074" WHERE "Unit" = '441st BS, 7th BW'