Description

With the object zoomed in, it looks like its some kind of sphere/orb as seen in Mosul. Filmed by a Department of Homeland Security DHC-8 Turboprop.

From 1:42 to 1:46, the object dims and gains speed suddenly, also leaving behind a trail of coldness beind it potentially. This is filmed in black hot mode, so the object lost heat and dissapeared into the background, but seems to release a trail of coldness behind it that quickly dissipates. You might want to go frame by frame here.

Plus the whole going into water thing and splitting into 2.

From the [report]
(http://docs.wixstatic.com/ugd/299316_9a12b53f67554a008c32d48eff9be5cd…)

On April 25, 2013, at about 9:20 pm local time, an unknown object at low altitude flew directly across the Rafael Hernandez airport runway at Aguadilla, Puerto Rico, causing a delayed departure of a commercial aircraft. There was no squawking transponder signal to alert the aircraft tower, nor was there any communication with the tower to prevent a dangerous situation with departing and arriving aircraft.

...
Analysis of the thermal imaging video revealed irregular characteristics of an unknown object not similar to any known natural or man-made objects. The video was split into 7027 individual frames so that careful analysis could be made. Evaluation of the video frame by frame enabled detailed characterizations of the object. The object’s size, speed, location, infrared (IR) emissions, directional movement, and other properties were compared against all known possible explanations including state-of-the-art drone capabilities as well as the possibility of a hoax.

...
a Freedom of Information Act (FOIA) request was made to the USAF 84th RADES group to obtain all FAA originated radar in the area during the time frame in question. This request was granted. Using the radar data that was provided, it was possible to validate that the times and locations displayed on the thermal imaging equipment of the CBP aircraft matched a government aircraft that was detected by radar. Additionally, unknown target(s) over the ocean and two to three miles to the north and northwest of the Rafael Hernandez airport were detected. None of these targets had transponders.

...
The object was between three to five feet in length and its speed varied between approximately 40 mph to 120 mph. Its median speed was roughly 80 mph. One of the object's flight characteristics the authors found to be significant was the object’s speed through the water which did not vary as it impacted the water. Its speed through the water reached a high of 95 mph and averaged 82.8 mph.

...
As can be seen in the video, the object splits into two parts shortly after entering the ocean and then briefly re-emerging. Frame by frame analysis ruled out the possibility of a reflection or of a second object emerging from the water. The object’s thermal image actually grew in size momentarily before it split into two parts. Both parts moved through the air and water at the same speed as the original object