It would be typical for a hangar like M.Air to have portable Honda type generators around , the same type used by campers to power lights or tv's , or homeowners in case of a power failure , they are fairly light and portable and one guy can lift one into the back of a truck.
They are noisy if you are trying to sleep next to one at the campground , but far out in a farm field they would be less noticeable . If DM and associates used power I expect that is how . The barn would be too close to prying eyes , traffic and neighbors .
At the best of times operating an incinerator would draw too much curious attention because nobody has ever seen one before , let alone seen a couple of young guys load it with unusual contents and operate it near a busy road.
The electrical power , by generator or otherwise , serves one main purpose and that is to run the small fans that push fresh air into the unit , without air , a fire will not burn. A small amount of power would also operate the timer if they used it.
I would be surprised if they carried a generator around day after day just in case they got lucky , so most likely everything went to the farm first , probably a trip back to town to get tools and generator , maybe different truck with the right hitch , or the large black trailer , and then complete the task early the next day (Tuesday)
That's presuming the incinerator was at the farm in the first place , .... if it was kept inside the barn it would have had bird crap all over it unless covered with a tarp. Probably stored outside . They are designed for that.
My guess is everything was completed by late Tuesday afternoon and then the "boys" went to DM's house .... I say that because in one TV interview a neighbor commented that "the guys" were in the back yard tues evening doing "remedial work" and there were "tools all around" ..... makes me wonder why the neighbor specifically remembered what happened tuesday because the arrest and publicity wasn't until 3-4 days later ..... unless he is the neighbor with the security camera and had reviewed it .
Random thoughts
--guys like TB would also have portable generators for construction , often in the back of work trucks , but I think the truck for sale was for towing the family fifth wheel camper unit , not for work , yet on the other hand maybe a generator for TB's camper .... it is a pretty long stretch and an amazing coincidence if TB's generator was there to be used.
-- my speculation is the incinerator was operated in one area , contents emptied into the woods (forensics was digging there) ,,,, incinerator then moved and parked where the neighbor photoed it , then the patch of ground where the incinerator was operated was flash burned with gasoline to burn off any bits of blood or clothing or evidence spread around while loading the machine. And /or burn the truck seats as well , there would be no other reason for the burned patch of ground. Certainly the incinerator itself would not have done it. One of the helicopters showed the forensic tent mounted over the burn patch , plus off a few feet in the actual bush were personnel removing soil and items , could have been some of the incinerator contents, or debris raked up after the flash burn. My speculations only.
--It would also be typical for the trailer DM took to races in Baja to have tools and a generator to power drills etc . Maybe the trailer (with generator) was brought to the farm , when finished , load TB truck and off they go. I suspect they did because looking at field tire tracks from the air indicate long turning radius of a truck and trailer but hard to tell if dual wheels (DM red Ram) . Trailer tracks could also be from towing the incinerator.
