Donna Nolan, Natural Resources technician goes about the task of chopping down stalks of the Musk Thistle, an invasive noxious weed found for the first time on Tinker Air Force Base. The weed is an biennial, so only reproduces only from the seed, so chopping it down is the best way to get rid of the plant and ensure the seeds don't have an opportunity to spread. (Air Force photo by Kimberly Woodruff)

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Photo by: Kimberly Woodruff |  VIRIN: 210609-F-FH087-0002.JPG