Table: operation_flintlock
Columns: name
location
elevation_height
delivery
purpose
yield

Question: What is the elevation and height for Halfbeak?
SQL: SELECT "elevation_height" FROM operation_flintlock WHERE "name" = 'halfbeak'

Question: What is the purpose of Long Shot?
SQL: SELECT "purpose" FROM operation_flintlock WHERE "name" = 'long shot'

Question: What is the yield in NTS Area U2R when the purpose is weapons development?
SQL: SELECT "yield" FROM operation_flintlock WHERE "purpose" = 'weapons development' AND "location" = 'nts area u2r'