According to the Russian Ministry of Defense (MoD), United States forces inside Syria, obtained Fire-Control "Radar Lock" against a Russian Fighter Jet on routine air patrol in southern Syria today.
The Ministry claims a U.S. F-16 activated its firing control radar, which "locked-on" to a Russian Fighter Jet.
Typical citizens may not grasp the severe implications of such an action. Under the rules of engagement, the locking-on of a fire control radar is the equivalent of actually firing a weapon.
For countries like the US and Russia, fire-control radar is the "beep of death." In general, once fire control radar is locked-on to a target, the systems inside the target start screeching warning beeps to indicate the target has been locked-onto. In most cases, there is almost NOTHING that can break such a radar lock.
Even with the top-of-the-line, fifth generation fighter jets, there is almost no maneuver the aircraft can perform, to break the radar lock. As such, in general, a target that has been locked-on, will be dead within seconds.
That is why countries regard the use of fire control radar - and especially a lock-on -- as an act of war and actual engagement in a fight.
That the United States allegedly did this today, to a Russian fighter jet, is a very big deal. Things continue to escalate between the US and Russia, and, as usual, the US is the aggressor.