Explosive charge and turbojet engine: what they have in common

1. Step 1. Explosive charge — is part of — Landmine. The charge.
2. Step 2. Landmine — is used in — Minesweeper. Against sea mines.
3. Step 3. Minesweeper — has part — Sonar. Searching for mines.
4. Step 4. Sonar — works like — Radar. The same echolocation principle: sound in water instead of radio waves.
5. Step 5. Radar — is part of — Jet fighter. A radar.
6. Step 6. Jet fighter — has part — Turbojet engine. A turbojet.

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