Unless the perspective is way out however, they must have been less than 50 feet AGL when those trees were hit and below the tops of the other trees nearby. :-(
The tree (leftmost) of the first picture is a pine. I cannot tell which variety it is from that photo (likely are slash or longleaf). Typical crown height (when it reaches full maturity) is anywhere between 70-100 feet AGL. Some older examples of longleaf go up to 120-feet. The 17 y/o longleafs I have here are growing at roughly 3-feet/year. Many are over 60-feet tall.