wednesday, fire fighters put on a demonstration at nwtc, to drive home the things you need to know before into a hot oil fryer. because if you don't - this can happen.natsot/fryen on fire capt. joe gabe, green bay metro fire dept.:"it can be quite dangerous and unfortunately it happens more often then people think."lt. cody johnson, green bay metro fire dept.:"the reason why it's so dangerous is cause you have a large amount of oil in a big pot with an open flame." experts say, make sure your turkey is thawed and dry before cooking, don't overfill the fryer with oil, stay 15 feet away from a structure, and have a fire extinguisher on hand.lt. cody johnson, green bay metro fire dept.:"if you have too much oil in there and you dump the turkey, it overflows and obviously the oil catches fire and from there if you're on your deck, that catches fire and kind of snowballs from there."while it's difficult to say how many fires are sparked by turkey fryers, thanksgiving is the leading day for cooking fires in the nation.and on a day meant for family and feasting, firefighters want everyone to sta