A comprehensive view of the spatial and temporal dynamics of 3C 454.3 during the period 2013–2017. Upper panel: Radial core separation versus time of all the identified jet components in 3C 454.3. The dashed, horizontal line designates the mean position of region C during our observing interval, whereas the gray shadowed area represents the positional range that region C has been reported by this and previous studies. Lower-left panel: Travel distance evolution of knots M, Ca, Cb, and Cc. Lower-right panel: Relative right ascension and declination with respect to the VLBI core of components M, Ca, Cb, and Cc. The dashed, grey ellipsis highlights the location of region C relative to the core.