I'd like to personally than the sundry CSI shows personally
for making the life of every for-real evidence technician a living nightmare.
"No. ma'am we cannot actually tell the make, model and year of the badguy's car by analyzing the pile of feces he left on your kitchen table, and no, there is not a photo-negative image of him, her or it burned onto the retina of your toy poodle who defended your home and hearth by being stuffed into the kitchen wastebasket, presumably not of it's on free will, but by the cranked out tweaker who, with any luck at all will gork out having taken an entire bottle of your husband's angina nitro......."
BTW, in one academy I am intimately familiar with each candidate is issued a SIG, and proceeds to fire around 1,100 rounds thru it over a week, in any weather, with no maintenance. None. They get an occasional shot of lube when sluggish, but all cleaning is done at the end of the firearms evolutions.