Satellite Images Show Russian Military Buildup Near Finland – NYT - The Moscow Times
www.themoscowtimes.comRussia is expanding its military infrastructure near the border with Finland, in what NATO officials describe as the early stages of a long-term buildup, The New York Times reported Monday.

The image used here and in the NYT article shows a training ground, these are temporary tents for training troops.
I seem to remember, training exercises was what they told the initial troops that went into Ukraine was happening. So, while I really doubt they will do anything. That’s really not an indicator either way for Russia.
“A likely excuse.”