CEDAR RAPIDS — John “Jack” Cosgrove, whose first job after graduation was at Collins Radio and who went on to become CEO of Rockwell Collins, died at his home on Jan. 23.Since then, comments on social media from former employees and co-workers at what today is known as Collins Aerospace — Cedar Rapids’ largest employer and a division of Raytheon Technologies — spoke of Cosgrove’s ability to connect with them.“He knew everyone’s name and always had a smile for you,” one Collins Aerospace Facebook post read.