In N’djamena the customs staff pulled me aside when the x-ray scanning machine noticed the [portable] ultrasound. I explained I worked for MSF and motioned the shape of a pregnant woman’s abdomen and how the ultrasound would check the situation of babies inside mammas. To my delight, and with some bravado and a sweeping of the hand by the customs officials, they shooed me to the exit with all my bags intact, and said, ‘He works for MSF, let him go.’