I honestly hate to critique this, especially since you are doing this on your own time, out of the kindness of your heart, but there have been flyers circulated regarding Lucas and his disappearance has been on the TV, in newspapers, on the radio. If the goal is to reach farmers/landowners to check out buildings, sheds, land, etc, that's what needs to set THIS flyer apart from others. The focus should be on that information. As it is, the focus is on him/his photo and that he is missing and the parts about checking land, sheds etc is small, towards the bottom and might be easily overlooked.
JMO and I really hope my suggestion/observation isn't coming off rudely.....I think it's awesome so many people are searching, mapping, making flyers, appealing to the public etc.
ETA: maybe something as simple as highlighting the text that asks farmers/landowners to check their land, farms, buildings would make that part more noticeable/more emphasized.