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![9172375.jpg](https://photos.usni.org/sites/default/files/imagecache/Photo_Full/usni_photo_gallery/tn_9172375.jpg)
Trainer Wally Ross attaches a special harness to porpoise 'Tuffy', trained at the Naval Missile Center, Point Magu, California. Instruments attached to the harness are designed to measure Tuffy's heartbeat, respiration, and temperature durin
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Animals on Board