; and (2) establish goals set to advance technology, improve engineering practices, and facilitate continuing education in relevant areas of study. (c) Authorization of appropriations There is authorized to be appropriated to the Administrator $500,000 for each of the fiscal years 2018 and 2021 to carry out this section. . (b) Table of contents The table of contents for chapter 445 is amended by adding at the end the following: 44518. Advanced Materials Center of Excellence. . 5006. Interference with airline employees (a) In general Not later than 1 year after the date of enactment of this Act, the Comptroller General of the United States shall— (1) complete a study of crimes of violence (as defined in section 16 of title 18, United States Code) committed against airline customer service representatives while they are performing their duties and on airport property