High Quality Content by WIKIPEDIA articles! Reports regarding the longest recorded sniper kill that contain information regarding the shooting distance and the identity of the sniper have been presented to the general public since 1967. Snipers in modern warfare have had a long history since the development of long distance weaponry. As weapons, ammunition, and aids to determine ballistic solutions improved, so too did the distance a kill could be targeted from. The modern methodology of long-distance sniping (over 1.25-kilometre (0.8 mi) shots) requires intense training and practice. A sniper must have the ability to accurately estimate the various factors that influence a bullet`s trajectory and point of impact, such as range to the target, wind direction, wind velocity, air density and elevation of the sniper and target. Mistakes in estimation compound over distance and can cause a shot to only injure, or to miss completely. Devices such as laser rangefinders, handheld meteorological measuring equipment, handheld computers, and ballistic-prediction software can contribute to increased accuracy.