CREATE TABLE table_73073 ("Date" CLOB, "B-52 Model" CLOB, "Serial #" CLOB, "Unit" CLOB, "Bomb Capacity" CLOB, "Mission/Target" CLOB, "Cause of Loss" CLOB)

When 7th bw attached to 43rd sw is the unit what is the b-52 model?
SELECT "B-52 Model" FROM table_73073 WHERE "Unit" = '7th BW attached to 43rd SW'
SELECT "B-52 Model" FROM "table_73073" WHERE "Unit" = '7th BW attached to 43rd SW'