Good Morning Sandra, 

Thank you for contacting the U of M Extension Service. 

Please click on the following link from the U of M Extension Yard and Garden website: https://extension.umn.edu/natural-resources-news/browning-needles-spruce-trees

This website discusses several diseases of coniferous tree that may be killing your trees. 

Last year was a drought year and made trees more susceptible to diseases if they were not watered. From your photos, it appears the trees have been declining for more than a year. 

Here is another link about eastern spruce budworm: https://extension.umn.edu/yard-and-garden-news/eastern-spruce-budworm-population

Sorry about your trees.