Hemorrhagic fever viruses such as Ebola have been widely discussed as a biological weapon. Deliberate introduction of such a weapon, whether in a warhead or a human vector, would be an act of war and a crime against humanity. Protection of our population is a matter of national security.
Clearly, something went wrong. After all, Ebola patients have been successfully treated in the U.S. before without any of the individuals caring for them becoming infected.