Nevermind! I figured it out!

declare @ TimeVal time,

@ TotalTime time; -- space added between @ and variable name to allow code to post

set @TimeVal = '08:05:44.000';

set @TotalTime = '00:13:00.000';

select @TimeVal,

@TotalTime,

dateadd(ss, ((DATEPART(HOUR,@TotalTime) * 60) + DATEPART(MINUTE,@TotalTime) * 60) + DATEPART(SECOND,@TotalTime), @TimeVal),

convert(time, (convert(datetime, @TimeVal, 108) + convert(datetime, @TotalTime, 108)), 108);