Schemes to carry out a Presidents Day jihadist attack on a train station in Kansas City. Bomb a Sept. 11 memorial event. Blow up a 1,000-pound bomb at Fort Riley. Detonate a weapon of mass destruction at a Wichita airport — the failed plans all show imagination.

But how much of it was real?

Often not much, according to a review of several recent terrorism cases investigated by the FBI in Kansas and Missouri. The most sensational plots invoking the name of the Islamic State or al-Qaida here were largely the invention of FBI agents carrying out elaborate sting operations on individuals identified through social media as being potentially dangerous.

In fact, in terrorism investigations in Wichita, at Fort Riley and last week in Kansas City, the alleged terrorists reportedly were unknowingly following the directions of undercover FBI agents who supplied fake bombs and came up with key elements of the plans.