Regarding copyright, for a live public presentation (PowerPoint) that is hosted by a third party, like for a trade show, do images copied from various websites fall under fair use? The presentation may be recorded and later posted online by the host as an on-demand lecture. The topic covers public safety considerations during an emergency, and our company offers products related to some of those considerations, and are also featured in the presentation. Would this still fall under fair use as an education lecture?