Crossfire New Airraid Sound ModThe sound taken from KSHMR's sound pack (producers or music makers can understand). I found air raid sounds in effects. I wanted to change original crossfire's airraid sound. Just edit the new sound a bit and added alarm sounds like original sound then replaced it by crossfire air raid sound.
For askers "Who is KSHMR?" well he is a music producer i suggest you listen his songs or musics.
Note: Works in steam version.