    Forde then went to the house of one of his

friends, where the three men unloaded all of the items taken

from Ojo's house, including a shoebox containing a rusty firearm

and its magazine.

     2.   Discussion.   a.   Ineffective assistance of counsel.

The defendant argues, as he did in his motion for a new trial,

that his trial counsel was constitutionally ineffective.     He

contends that counsel should have introduced CSLI evidence to


     1
       The Commonwealth charged Brown with the victim's murder,
and he was acquitted in a separate trial.
                   victim at the Franklin

Street residence, and before the return there later that

evening.    He contests the accuracy of Forde's testimony that he

and the defendant left Franklin Street, traveled to Mattapan for

a brief period of time, and then returned to Franklin Street,

without mentioning any stops along the way, particularly other

stops in Mattapan and the Dorchester section of Boston.    The

defendant points to CSLI evidence showing that Forde's telephone

was absent from Quincy for more than one hour, and traveled to

several locations in Mattapan and Dorchester during that time

frame.3    He argues that trial counsel was ineffective because he



     3
       Cell site location information (CSLI) is "a cellular
telephone service record or records that contain information
identifying