Esquire has an interesting article on the people that jumped from the World Trade Center following the 9/11 attacks, focusing in particular on one iconic photo of "the Falling Man."
Perhaps it is naivativity on my part, or ignorance, but I'd never heard any of those that jumped described as cowardly or as having committed suicide, and have never thought of them in that way. As the article describes, some clearly were attempting to use sheets and drapes as makeshift parachutes. All were attempting to escape the flames and overpowering smoke. However, their actions could not be suicide because their choice was a choice of how to die, not whether they should die. God will not condemn them for that.