LOL....
You are turning into a hell of a detective... amazing that you have identified the substance used for adhesion from a picture taken 30 yards away. Very impressive. Although you may want to manually turn off your auto flash in the future... someone might get the wrong impression of you taking pictures of what that vandal did. The flash doesn't help at that distance and it makes you stand out to the LIBS drving by there.
Three for you:
Atta' boy ...atta' boy... atta' boy