[quote]Lastly, WHY DIDN'T THEY JUST FLY THE EAGLES TO MT. DOOM?![/quote]*breathes deeply*
...Mordor is the most heavily fortified enemy nation in Middle-earth. The Eye and the fell-beasts are on constant alert. The distance from the Ash Mountains to Mount Doom is 80 miles. Traveling that distance through such heavily guarded territory would be suicide. Plus, the Eagles have a duty to safeguard the lands near the Misty Mountains. Taking the Eagles to Mount Doom leaves the Mountains unguarded, giving the orcs within free reign.