Texas shooting ... School had drill on 3/21/22

 The day before Georgia Guidestones 42nd birthday 

"gun" = 42 (English Ordinal)

https://www.ksat.com/news/local/2022/05/27/uvalde-cisd-police-officers-held-response-training-just-two-months-before-mass-shooting/

From and including: Monday, March 21, 2022

To, but not including Tuesday, May 24, 2022

Result: 64 days

From and including: Monday, March 21, 2022

To, but not including Tuesday, May 24, 2022

Result: 64 days

"school shooting" = 64 (Reverse Full Reduction)

"Synagogue of Satan" = 64 (Full Reduction)