Are you bored and have a few hours spare? Why not create your own SWAT 4 Custom map - here are page-by-page links to an in-depth guide made by esteemed map developer Deadman:
http://hotswatmods.com/maphtml/deadie1.htm
http://hotswatmods.com/maphtml/deadie2.htm
http://hotswatmods.com/maphtml/deadie3.htm
http://hotswatmods.com/maphtml/deadie4.htm
http://hotswatmods.com/maphtml/deadie5.htm
http://hotswatmods.com/maphtml/deadie6.htm
http://hotswatmods.com/maphtml/deadie7.htm
http://hotswatmods.com/maphtml/deadie8.htm
http://hotswatmods.com/maphtml/deadie9.htm