I have tried loading Trailhead in every different broswer (Chrome, IE, Edge, Mozilla...) but I cannot see the images within the trainings (see screenshot as an example).  There are references to the images throughout the trainings, and I see a spot where the image would likely be, but nothing loads.  I don't feel like I am getting the best training experience without the images... anyone else experiencing this problem?
  

I have tried loading Trailhead in every different broswer (Chrome, IE, Edge, Mozilla...) but I cannot see the images within the trainings (see screenshot as an example).  There are references to the images throughout the trainings, and I see a spot where the image would likely be, but nothing loads.  I don't feel like I am getting the best training experience without the images... anyone else experiencing this problem?