Along with John-117 and Jun-A266, Kelly-087, Linda-058, and Fred-104 are still alive but classified as MIA.
All Spartans that have died are MIA as no Spartan can be decleaed dead
I dont think you understand what he is askin. he is wondering if there are any still living that are thought to be "dead". like how John-117 aka master chief is thought to be "dead" aka "MIA" but is still verry much alive. but it is not confirmed that Jun-A266 is still alive as is not mentioned as so by my knoledge. please correct if wrong