Event-hiding. Temporal cloak creates gap in the flow of light. Nanotech gonna be a bull. Big time. Invisibility, interfering with light, so small it is.

along with being used to cloak physical objects metamaterials could also be used to cloak a singular event in time

via gizmag.com

Spacetime Cloak" by using metamaterials - a class of artificial materials engineered to have properties not be found in nature - to speed up the leading edge of light waves, while slowing down the trailing half.

This would create a "corridor" between the two halves, at which point their source wouldn't be observable.

To achieve any measurable macroscopic effects would require an experiment on planetary or even interplanetary scales, the researchers say.