On Chilca Beach (in Peru, south of Lima), last year in March 2020, hundreds of people held a UFO Skywatch vigil.
They saw a flashing light above sea level (in the sky), pointed 2 laser beams towards that UFO to try to interact with it, to everyone's surprise the UFO emitted strong pulses of light, interacting back.
The live broadcast was directed by Dr. Anthony Choy on the program "Journey to Another Dimension".
A lighthouse, or even a supposed drone, could not mimic such an intense pulse of light.