In the book Old Yeller was a Black Mouth Cur. Black mouth curs were not uncommon in the earlier USA days (âwild westâ days) in the southern USA (Texas, etc.) and could have been chosen as the breed in the book because it was recognized and it was a common hunting companion dog.
The cost per flight hour varies by type of drone. Predator and Reaper drones cost about $2,500-3,500 per flight hour; larger armed systems such as the militaryâs Global Hawk cost about 10 times as much: approximately $30,000 per flight hour.
however roboteconomic s colin lewis did some back of the napkin math to figure out whether drones could save amazon some cash his conclusion yes he believes amazon s average shipping cost is $ 2 to $ 8 with drones if amazon prices it right the cost could be as low as $ 2 a shipment