Each jammer can cost as little US$ 10: * https://hackaday.com/2020/09/08/teardown-mini-gps-jammer/ https://hackaday.com/2020/09/08/teardown-mini-gps-jammer/ A

Each jammer can cost as little US$ 10: * https://hackaday.com/2020/09/08/teardown-mini-gps-jammer/ https://hackaday.com/2020/09/08/teardown-mini-gps-jammer/ And a single one can mess up an entire airport until its found: * https://trans.info/en/gps-jammer-that-brought-disruption-to-lyon-airport-353510 https://trans.info/en/gps-jammer-that-brought-disruption-to-... * https://insidegnss.com/fcc-fines-operator-of-gps-jammer-that-affected-newark-airport-gbas/ https://insidegnss.com/fcc-fines-operator-of-gps-jammer-that... Very cheap/easy to flood an area with noise.