![NATS 2020 56th National Conference Program by National Association of Teachers of Singing, Inc. - Issuu NATS 2020 56th National Conference Program by National Association of Teachers of Singing, Inc. - Issuu](https://image.isu.pub/200626144233-e31f95939150db0487cc07c73d2182ec/jpg/page_1.jpg)
NATS 2020 56th National Conference Program by National Association of Teachers of Singing, Inc. - Issuu
John Wiseman on Twitter: "This map by @engelsjk shows approx. the past 24 hours of aircraft ADS-B data in this region. Red points are where GPS reported high uncertainty. This map seems
![John Wiseman on Twitter: "This map by @engelsjk shows approx. the past 24 hours of aircraft ADS-B data in this region. Red points are where GPS reported high uncertainty. This map seems consistent with previously identified regions of GPS interference ... John Wiseman on Twitter: "This map by @engelsjk shows approx. the past 24 hours of aircraft ADS-B data in this region. Red points are where GPS reported high uncertainty. This map seems consistent with previously identified regions of GPS interference ...](https://pbs.twimg.com/media/FLsBVg9VIAADIA8.jpg)
John Wiseman on Twitter: "This map by @engelsjk shows approx. the past 24 hours of aircraft ADS-B data in this region. Red points are where GPS reported high uncertainty. This map seems consistent with previously identified regions of GPS interference ...
![John Wiseman on Twitter: "This map by @engelsjk shows approx. the past 24 hours of aircraft ADS-B data in this region. Red points are where GPS reported high uncertainty. This map seems consistent with previously identified regions of GPS interference ... John Wiseman on Twitter: "This map by @engelsjk shows approx. the past 24 hours of aircraft ADS-B data in this region. Red points are where GPS reported high uncertainty. This map seems consistent with previously identified regions of GPS interference ...](https://pbs.twimg.com/media/FLqvhf7VQAAjJhZ.jpg)