From the Powers and Abilities Card


Shield: When a friendly character makes a ranged combat attack, you can give any number of friendly characters adjacent to the attacker and using the S.H.I.E.L.D. team ability either a free action or a power action (but not both) before making the attack roll: For each character given a free action, modify the attacker’s range by +1; for each character given a power action, modify the attacker’s damage value by +1.

Barrier: Give this character a power action; put up to four blocking terrain markers on the battlefield in any square of clear terrain that is not occupied by a character and is within this character’s range. Each blocking terrain marker must be put adjacent to another blocking terrain marker created by this character. If this character has a range of 0, it can put the markers only in adjacent squares. This character must have a clear line of fire to at least one of the blocking terrain markers. These blocking terrain markers remain until the beginning of your next turn or until this power is countered or lost.

Since you are not making an attack roll with barrier, does this mean you cannot use the shield TA to boost a character's range thus increasing the range of the barrier? TIA

well its not realy about the attack roll its more to do with

Shield: When a friendly character makes a ranged combat attack, you can give any number of friendly characters adjacent to the attacker and using the S.H.I.E.L.D. team ability either a free action or a power action (but not both) before making the attack roll: For each character given a free action, modify the attacker’s range by +1; for each character given a power action, modify the attacker’s damage value by +1.


is barrier a ranged combat attack?No
then you can not use SHIELD to increase range.