Check out the updated version of the Army PFT. The Army's Basic Training Physical Fitness Test is a three-event physical performance test used to assess endurance. It is used to measure a your physical strengths, abilities, and cardio-respiratory fitness.
1 doctor agreed: See ophthalmologiist: Light flashes in the periphery of your vision are usually caused by either a problem in your eye called vitreous detachment or ocular migraine. You need to see an ophthalmologist soon for a dilated eye exam to be sure your retina is OK.
When the light appears for a third time, Deena suggests that it may be moving. The video then concludes with the sky going dark and the phenomenon disappearing for good. It is not yet known what caused the flashes of light but it has been suggested that they were the result of a power line going down in the area.