\section{VLA/EVLA} \subsection{VLA} \subsubsection{Rapid Response Science} The UC feels that in order to facilitate rapid response science, any tools currently available for rapid response with the VLA (e.g., automatic generation of observe files based on external triggering) should be made publicly available. \subsubsection{Retired Modcomps} The UC commends Jim Ulvestad for the retirement of the modcomp control computers on June 27. This updates a vital part of the computing structure for the VLA and paves the way for the EVLA. \subsubsection{Proposal Submission Tool (PST)} The NRAO Proposal Submission Tool (PST) is a welcome capability that has significant potential benefits to the user community. The recent capability for observers to obtain archival data from their proposals submitted through PST {\it without the need to request an access code} has streamlined the observing process. There are however a number of basic features of the tool which are not intuitive to even experienced radio observers (e.g.\ sessions and source/resource pairs). Currently producing proposals using large lists of sources and frequencies is very painful. In addition, several problems that cropped up in the first full use of the tool were repeated during the recent 1 June deadline using it (e.g.\ the tool was non-responsive). We applaud the continued post-deadline Proposal Submission Tool survey by Joan Wrobel. The Users Committee encourages NRAO to use this and any other feedback to pursue methods to simplify the proposal process through PST so that it is easily employed by the entire astronomical community. We understand that NRAO has begun working with an outside software company to upgrade the tool for the upcoming October deadline. For the next UC meeting we would like to receive more details on this arrangement as well as an assessment of the viability of running this tool through and outside company. \subsection{VLA - EVLA Transition} The UC applauds the progress that is being made on EVLA construction and the transition from the VLA to the EVLA. Again, the UC endorses maximum progress towards the EVLA, even with the possible short-term inconvenience to current VLA/VLBA users. We acknowledge that NRAO staff need flexibility with the VLA antenna configuration schedule especially for testing the correlator, and urge them to use their discretion about modifying antenna configuration schedules to achieve the best situation for testing. The UC is encouraged to hear that by September of 2007, 12 VLA antennas will have been retrofitted to the EVLA design. We commend the NRAO on resolving the problems with design and fabrication of the L-band OMT. Although receiver production is behind schedule, this can apparently be made up further in the schedule with project contingency. \subsubsection{EVLA Transition Observing} We applaud the NRAO staff for including the EVLA antennas in routine scientific observations (one of the recommendations from the 2006 UC meeting). This will become extremely important as almost half of the array will be retrofitted by the end of 2007, and the various observing modes will need to be checked out. However, a number of members of the UC felt that the existing information and instructions on how to deal with potential problems with the data from EVLA could be better organized and more thorough with specific examples illustrated. One suggestion is to organize the information on the webpage where currently the information is given (http://www.vla.nrao.edu/astro/guides/evlareturn/) by frequency range. This is done in part, but could be improved upon. Another point of concern is that Doppler tracking is no longer possible with the EVLA antennas (until the switch to the new correlator) and there may be some issues when attempting to match new observations with old, archival observations. Some members of the UC felt strongly that NRAO should make an effort to give guidance, especially since two VLA HI large projects were recently awarded time. We also commend NRAO for its call for proposals for the new C band and L band receivers to take advantage of the wider tuning range, and hope to hear some results at next year's UC meeting. As the VLA-EVLA transition begins to impact regular VLA observing more and more significantly, VLA users and proposers will need to know about the transition capabilities and limitations. There does not appear to be one solution which would insure maximal advertisement. The UC recommends using a variety of methods to broadcast upcoming changes: through the web site (as is already done), with short e-mails whose subject announces in caps that this is an important message about upcoming observing, through the NRAO newsletter, warnings about EVLA changes in jobserve (perhaps a generic message pointing to the web page for most recent updates), and warnings in the Proposal Submission Tool while the user is preparing their observe file. \subsection{EVLA} \subsubsection{SAGE Committee} The UC heard about the development of the Science Advisory Group for EVLA (SAGE) committee to select first scientific user observing modes, projects for early EVLA science, and priority ranking of any descoping options should they become necessary. We commend NRAO for its approach to developing plans for early science projects with the EVLA. The UC is anxious to hear more from this committee, including seeing the report from their most recent meeting (late May 2007) when it becomes available. We note that the membership of the committee is listed on the NRAO committees webpage. \subsubsection{EVLA User Support} The UC was favorably impressed with the demonstration from the e2e/software group showing CASA. We would like updates on new algorithms in development within CASA for the EVLA, noting that many of the higher end capabilities (such as wide-field imaging) have yet to be implemented. We were told that there are not enough resources to work on all the problems of post-processing software in parallel, so algorithm development is being deferred. While necessary under the existing funding realities, we caution that postponing algorithm development will limit the kinds of early science that can be done with the EVLA. More information is needed at the next UC meeting on how users will reduce their EVLA data. With the large data volumes which will be generated, will it be feasible to download data, or will travel to the AOC be necessary? Issues such as these have substantial operational impact, especially for overseas users and those at the end of low bandwidth connections, and impacts the breadth of the EVLA user base. The UC had the impression that there is a plan for this but we would appreciate seeing more discussion of this. In general, collaboration with the ALMA project to develop common tools for proposal submission, observation preparation and observation scheduling is a good use of NRAO's limited resources and will provide familiarity for EVLA users to become ALMA users as well as vice versa, and good steps toward the "One Observatory" Goal. \subsubsection{Array Science Center} Finally, the UC heard ideas about an Array Science Center for the EVLA, which would be similar in design to the ALMA Regional Center. However, it was unclear to us how the ASC would relate to the current AOC? Such an implementation is essential to ensuring full support for EVLA users, although the UC notes that even providing the most basic level of support would require additional new staff. As this may impact implementing the full EVLA functionality, it is of considerable concern to the user community.