A blade outer air seal assembly, comprising: a blade outer air seal segment; a plurality of cooling channels (60; 60a; 60b; 60c) disposed in said blade outer air seal segment, the plurality of cooling channels extending at least partially between a first circumferential end portion and a second circumferential end portion; a plurality of inlet apertures (56; 56a; 56b; 56c) for providing a cooling airflow to the plurality of cooling channels; and a plurality of trip strips in said plurality of cooling channels (60; 60a; 60b; 60c) for causing turbulence in said cooling airflow within the plurality of cooling channels (60; 60a; 60b; 60c), wherein said plurality of trip strips includes: a plurality of chevron-shaped trip strips having a first leg and a second leg joined together at an apex and arranged adjacent said plurality of inlet apertures (56; 56a; 56b; 56c), configured to direct said cooling airflow across an entire width of said plurality of cooling channels (60; 60a; 60b; 60c); characterized in that said plurality of trip strips further include a plurality of single skewed line trip strips, wherein each single skewed line trip strip is shaped as a single line and arranged at an angle to a path defined by the plurality of cooling channels (60; 60a; 60b; 60c); and wherein the plurality of single skewed line trip strips are arranged downstream from said plurality of chevron-shaped trip strips with respect to said cooling airflow; and wherein the plurality of cooling channels (60; 60a; 60b; 60c) are separated by circumferentially extending barriers that are generally parallel. a blade outer air seal segment; a plurality of cooling channels (60; 60a; 60b; 60c) disposed in said blade outer air seal segment, the plurality of cooling channels extending at least partially between a first circumferential end portion and a second circumferential end portion; a plurality of inlet apertures (56; 56a; 56b; 56c) for providing a cooling airflow to the plurality of cooling channels; and a plurality of trip strips in said plurality of cooling channels (60; 60a; 60b; 60c) for causing turbulence in said cooling airflow within the plurality of cooling channels (60; 60a; 60b; 60c), wherein said plurality of trip strips includes: a plurality of chevron-shaped trip strips having a first leg and a second leg joined together at an apex and arranged adjacent said plurality of inlet apertures (56; 56a; 56b; 56c), configured to direct said cooling airflow across an entire width of said plurality of cooling channels (60; 60a; 60b; 60c); characterized in that said plurality of trip strips further include a plurality of single skewed line trip strips, wherein each single skewed line trip strip is shaped as a single line and arranged at an angle to a path defined by the plurality of cooling channels (60; 60a; 60b; 60c); and wherein the plurality of single skewed line trip strips are arranged downstream from said plurality of chevron-shaped trip strips with respect to said cooling airflow; and wherein the plurality of cooling channels (60; 60a; 60b; 60c) are separated by circumferentially extending barriers that are generally parallel. a plurality of chevron-shaped trip strips having a first leg and a second leg joined together at an apex and arranged adjacent said plurality of inlet apertures (56; 56a; 56b; 56c), configured to direct said cooling airflow across an entire width of said plurality of cooling channels (60; 60a; 60b; 60c); characterized in that said plurality of trip strips further include a plurality of single skewed line trip strips, wherein each single skewed line trip strip is shaped as a single line and arranged at an angle to a path defined by the plurality of cooling channels (60; 60a; 60b; 60c); and wherein the plurality of single skewed line trip strips are arranged downstream from said plurality of chevron-shaped trip strips with respect to said cooling airflow; and wherein the plurality of cooling channels (60; 60a; 60b; 60c) are separated by circumferentially extending barriers that are generally parallel.