One analyst is tempering her expectations for the company heading into earnings season.A Wall Street analyst is tapping the brakes on Kratos Defense & Security Solutions (KTOS -2.18%), and investors are taking notice. Shares of the defense tech company fell by 4.6% at the open Wednesday.Don't expect fireworksKratos manufactures drones and defense electronics products. It's best known today for its aerial target drones, but it also has a line of more advanced "loyal wingman" products that it hopes will one d ...