A surface effect (air cushion) vehicle measures $10 \mathrm{ft} \times 20 \mathrm{ft}$ and weighs $6000 \mathrm{lb}_{\mathrm{f}}$. The air is supplied by a blower mounted on top of the vehicle, which must supply sufficient power to lift the vehicle $1 \mathrm{in}$. off the ground. Calculate the required blower capacity in standard cubic feet per minute (scfm), and the horsepower of the motor required to drive the blower if it is $80 %$ efficient. Neglect friction, and assume that the air is an ideal gas at $80^{\circ} \mathrm{F}$ with properties evaluated at an average pressure.