Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) Retired US Navy pilot David Fravor trusts what he saw with his own two eyes. And what he saw, in 2004, was a flying object that cannot be identified. Otherwise known as a UFO. It was a "white object, oblong, pointing north, moving erratically," he told CNN's Jim Sciutto on Tuesday evening. At the time of the sighting, Fravor was a naval commander, in the cockpit of a US aircraft, and the details of the encounter are still fresh in his mind. "As I got close to it ... it rapidly accelerated to the south, and disappeared in less than two seconds," he said.Former military, defense officials report seeing otherworldly objects in the skyClaims come following reporting that the Pentagon has researched the possible existence of UFOs 
 Question:The movements of the flying object were unlike anything _ had ever seen, largely due to its agility and the way it handled.

David Fravor