[sand500]

Runway incursion is a technical term defined by the ICAO:

> Runway incursion. Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle or person on the protected area of a surface designated for the landing and take-off of aircraft.

[manquer]

OP only quoted "Invasion", he did not reference it as "Runway Invasion" perhaps he meant the ICAO term, perhaps he took issue with the term invasion. I assumed he meant the latter, How would we know for sure?

Ambiguity while correcting someone else is not ideal.

[Dylan16807]

Your post confuses me, because sand500's comment is a perfectly good reply to either interpretation.