Echolocate

1

Drop a buoy. Tap anywhere on the globe — or type a city name — then press PING.

2

Read the echo. A ping tells you how far the target is, never which way. It draws a ring: the city lies somewhere on that line.

3

Triangulate. Two rings cross at most twice. A third ring settles it.

4

Decode the dossier. Every ping declassifies another line of intel about the target.

5

Strike. Land a ping within 150 km of the city, or name it exactly, for a direct hit.