Seems like this could defend against drone incursions?
Boeing Has Patented a Plasma ‘Force Field’ to Protect Against Shock Waves
Boeing’s proposed system involves using a combination of lasers, electricity and microwaves to rapidly heat up the air between the vehicle and a blast. This heat creates a plasma shield that’s denser than the surrounding air and able to deflect or absorb the energy from the incoming shockwave.
www.sciencealert.com/boeing-has-patented-a-plasma-force-field-to-protect-against-shock-waves
h/t Xeven