 FACT: While attempting to disarm the bomb on the tram, the ATF agent  says to measure the current through a transistor. A multimeter is  used, and the measurement was stated to be "40 ohms". Current can be  measured by a simple multimeter only by connecting it in series with  the circuit to be measured, which was not done. Furthermore, current  is measured in amps. Ohms is a measure of resistance, a reading  which cannot be made on an energized circuit.