The DTGs of the classified ASSIST bulletins are listed below. 
ASSIST 91-5  -  DTG 290649Z OCT 91 
ASSIST 91-6  -  DTG 290647Z OCT 91 
ASSIST 91-8  -  DTG 251531Z OCT 91 
ASSIST 91-9  -  DTG 290644Z OCT 91 
ASSIST 91-17 -  DTG 072032Z MAY 92