alert appropriate behavior appropriate behaviour black care concern danger dangerous denied directions law legalities not allowed not permitted permission denied prohibited prohibition protect protection red rules safety sign signs vehicle warning warning sign white accident alarm burn caution chemical device emergency equipment extinguish extinguisher fire firefighter fireman flame foam handle hazard heat help hydrant nozzle object powder precaution property rescue safe spray work barrier barrier tape blocking off border caution tape closed closed areal closing off cordon dangerous area delimitation do not pass no passing through prevention red and white sheltered area stop warning tape action active authorities authority blue chopper control copter flight flying helicopter monitor monitoring motion moving observation patrolling police police-patrol power security skies sky sky-watch speed technology transport watch watching architectural architecture Australian block building dark design elements exterior external gray grey height heritage high historic historical history masonry old ornamental ornamentation perspectives plain Rooms solid Somber sombre stonework surfaces walls windows abstract art backdrop background blank canvas circle collage color colourful cool copyspace decorative floral frame girly graphic grunge ornate pastel pink pretty purple round scrapbooking spring style summer swirl texture vector analyse body burglar crime criminal crook evidence fingerprint forensic identification identify illustration individual ink investigation isolated lines mark murder mystery pattern personal print skin trace unique