U.S. Markets may end the week lower as investors wait for next's week slew of earnings reports. Shares of Wells Fargo (WFC) are lower after meeting quarterly earnings expectations. The nation's largest mortgage lender reported revenue declined, but less of a decline than Wall Street expected. Wells Fargo is the first big bank to report earnings this season. Amazon (AMZN) seems to be moving toward its "prime air" drone delivery system. Reuters is reporting the online retail giant formally asked regulators permission to test its delivery drones in outdoor areas near Seattle. Chevron sees its second quarter profit to be higher than it was during the last quarter. Chevron is scheduled to report its full second quarter results on August 1.