Nisha's hair outside the graduation dance is over her shoulder then in front of her shoulder and back to over her shoulder.
The letter Chris opens for Nisha telling her whether she got into her program or not is unsigned, though it has a signature block.
The movie is set in 1999 but the fashions are all very much modern, aka from 30 years later - men's pants are slim fit or skinny fit, shorts are tailored, and both underwear and athletic wear is quite modern, as are shoes.
In the blindfolded drill, the shadow of the drone is seen as it goes over the rower in seat 1.