... A trend was confirmed when developing combat use in landfills and exercises, where every now and then a task frustrated due to difficulties with the navigation, search, detection and accurate identification of the object at the bottom of the rushing attack areas. Even with the exit right on the target, lying among the familiar field of the target polygon, it was not easy to meet the fleeting seconds of contact, which often do not have enough to build the combat maneuver, aiming and hitting. At a speed of 1000 km / h in 3.5 seconds, the minimum required for aiming, the aircraft slipped a kilometer and a half. Bombs and then flew past the goals, not to mention the fact that the task is complicated by the improvement of air defense and the saturation of the frontal zone, which also had to be taken into account. When re-entry slip tore the whole effect of surprise, threatening to substitute attacker under fire from anti-aircraft gunners.