to make the fire sound you need to make an ambient_generic, give it a suitable sound, give it a name.. and make the func tank target it, make sure you set the flags of the ambient_generic properly, Start silent; Is Not looped; and a medium sound radius should do fine...
as for the camera 'fuzzyness' or interlace this was done with a simple texture trick,
simly make a texture with black and grayish horisontal/vertical stripes, make it a func_wall or something, and set its render mode to additive and render fx to about 90ish (additive renders black invisible) now place the func_wall in front of the camera and there you have it, perfect security camera interlace.