Emergency On-Site Support Services. Customer may, from time to time, request emergency on- site support from SimX, beyond the support described above. SimX will use commercially reasonable efforts to provide such emergency on-site support to Customer, subject to the availability of appropriate SimX personnel. Customer will pay SimX for such on-site support at SimX’s then-standard rates, and will additionally reimburse all costs and expenses that SimX reasonably incurs in connection with On-Site Services.